Answers
Answer:
its true
Explanation:
Related Questions
a. Write a hypothesis and identify the variables you will test.
Answers
The hypothesis is; Increasing the concentration of fertilizer will lead to an increase in plant growth.
The variables to be tested are; concentration of fertilizer and plant growth.
What is a hypothesis?A hypothesis is a speculative claim or explanation put forth based on scant data and used as a springboard for additional research or trial. It is an educated guess or testable prediction regarding the correlation between two variables or phenomena.
By manipulating the concentration of fertilizer as the independent variable and measuring the resulting plant growth as the dependent variable, we can test the hypothesis and determine if there is a correlation between fertilizer concentration and plant growth.
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3. The tundra, temperate deciduous forest, Desert, and Taiga are examples of which of the following?
biome
ecosystem
biosphere
population
Answers
Label the components of skeletal muscle tissue. Not all will be used.
Answers
Answer: skeletal muscle fibers , cardiac and smooth muscle fibre
Explanation: muscle tissue consists of fibers of muscle cells connected together in sheets and fibers.
Skeletal muscle is attached to bones and its contraction makes possible locomotion, facial expressions, posture, and other voluntary movements of the body.
Cardiac muscle forms the contractile walls of the heart. cardiomyocytes are single cells with a single centrally located nucleus.A principal characteristic of cardiomyocytes is that they contract on their own intrinsic rhythm without external stimulation. Cardiomyocytes attach to one another with specialized cell junctions called intercalated discs.
Smooth muscle tissue contraction is responsible for involuntary movements in the internal organs. It forms the contractile component of the digestive, urinary, and reproductive systems as well as the airways and blood vessels.
What’s the correct mRNA sequence from the DNA strand: TAC GCC CGA ATC
A. ATG CCG GCU TAG
B. AUG GCC GCU UAG
C. AUG CGG GCU UAG
D. AUG CCG GCT UAG
E. ATG CCG CGT TAG
Answers
Answer:
C. AUG CGG GCU UAG
Explanation:
This works the same as a normal DNA strand, A=T, C=G, except for one difference. Thymine is not an mRNA base, instead it is Uracil. Therefore, if there is an A, you would typically replace it with a T, but for mRNA you will replace it with a U. Keep in mind you will still replace the T in the DNA strand with an A in the mRNA strand :)
What are the benefits and drawbacks if humans and animals could do photosynthesis?
Answers
Answer:
If humans and animals could do photosynthesis, there would be several potential benefits and drawbacks:
Benefits:
Energy production: Photosynthesis is the process by which plants and some bacteria convert light energy into chemical energy, which is used to fuel metabolic processes. If humans and animals could do photosynthesis, they could potentially produce their own energy from sunlight, reducing their reliance on other energy sources.
Reduced food requirements: Photosynthesis could potentially reduce the need for food in humans and animals, as they could use sunlight to produce some nutrients and energy. This could be particularly beneficial when food is scarce, such as during famine or in space travel.
Environmental sustainability: Photosynthesis is a crucial process in the carbon cycle, converting carbon dioxide into organic compounds. If humans and animals could do photosynthesis, they could potentially reduce their carbon footprint and contribute to environmental sustainability.
Drawbacks:
Limited energy production: While photosynthesis is an efficient process for plants, it may not be as efficient in humans and animals. It is possible that the energy produced through photosynthesis may not be sufficient to meet the energy requirements of humans and animals, particularly if they are engaging in high-energy activities.
Limited nutrient production: Photosynthesis produces mainly glucose and other simple sugars, which may not be sufficient to meet all the nutritional needs of humans and animals. This could lead to deficiencies in certain nutrients, such as protein and essential amino acids.
Evolutionary limitations: Humans and animals have evolved to obtain energy and nutrients from food, and it is unclear whether the ability to do photosynthesis could be developed through evolution. It is also possible that the ability to do photosynthesis could have negative impacts on other aspects of human and animal biology, such as the immune system or reproductive health.
In summary, the ability for humans and animals to do photosynthesis could have some potential benefits, such as energy production, reduced food requirements, and environmental sustainability. Still, it may have some drawbacks, such as limited energy and nutrient production and evolutionary limitations.
Explanation:
what is gastulaton stage in development of a chick?
Answers
Answer:
Gastrulation is an early stage in embryo development in which the blastula re-organizes into the three germ layers : the ectoderm, the mesoderm and the endoderm.
Explanation:
hope this helps:) !!!!!
Convert a measurement of 100 cm to its equivalent in m.
Answers
Answer: 1 m
Explanation:
Autonomic motor neurons regulate visceral activities by
I. increasing activities in effector tissue.
II. decreasing activities in effector tissue.
III. allowing bidirectional conduction across synapses.
a. 1
b. 2
c. 3
d. 1 and 2
e. 1, 2, and 3
1 and 2
Answers
The correct answer is d. I and II.
Autonomic motor neurons regulate visceral activity by increasing and decreasing the activity of effector tissues.
Autonomic neurons are a type of nerve cell that regulates the activity of the body's involuntary or "visceral" muscles and organs. The Autonomic Nervous System “ANS” is the part of the nervous system that controls these involuntary functions.
The sympathetic nervous system is responsible for activating the body's "fight or flight" response during times of stress or danger. It does this by releasing the hormone adrenaline and increasing heart rate, blood pressure and breathing.
The sympathetic nervous system also stimulates the production of glucose by the liver and the breakdown of fat in adipose tissue, providing the body with energy during periods of high activity.
The parasympathetic nervous system, on the other hand, acts to balance the sympathetic nervous system, promoting relaxation and calmness. It does this by slowing the heart rate, lowering blood pressure, and increasing the digestion and absorption of nutrients.
Autonomic nerve cells are activated by signals from the brain and spinal cord and can also be influenced by hormones and other chemicals in the body. They use chemical signals called neurotransmitters to communicate with the muscles they control and communicate with organs.
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What are the possible benefits and drawbacks of today's system of
taxation?
Answers
Disadvantages of Taxation:
Putting in place an income tax system is quite difficult, especially when trying to control the wealthy and companies.Wealthy people benefit from tax evasion and dishonest avoidance because they can afford to pay for expensive tax "help." Warren Buffet, the famed investor, has been quoted as saying that it is unjust that his secretary pays 30% in taxes but Buffet only has to pay 17% on his income.Some contend that an earnings tax, regardless of its level, may cause financial hardship for people in the lower middle class and lower social classes. Any reduction, no matter how minor, can cause households that are barely making ends meet to significantly lower their standard of living.Advantages of Taxation:
The income tax enables progressive taxing based on your income. In terms of percentage, a person making $15,000 a year will pay less than a person making $150,000 a year. This method of wealth distribution works well.The existing arrangement also provides the government with a reliable source of income.An income tax creates a discrepancy between the value of a person’s work and what they actually receive (disposable income).Learn more about taxes here:
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Which specialized cell type would be found lining the trachea, the part of the body that brings air to the lungs?
Answers
Answer: Epithelial Cells
Explanation: It is epithelial cells because epithelial cells are cells that are found in the body surfaces. The conducting passage ways of trachea, nasal cavity, bronchi, bronchioles are lined with a special type of epithelial cells called pseudo stratified columinar epithelial cells which is ciliated and have mucus secreting globlets. These cells are found in the trachea because they have thin surface that facilitate diffusion, moisten the passage ways and protect the trachea from pathogens.
The next generation of pea plants has 552 plants, 546 have purple petals. Is the
population in Hardy-Weinberg Equilibrium? Solve for p and q.
Answers
The frequency of the dominant allele (p) is approximately 0.982 and the frequency of the recessive allele (q) is approximately 0.018.
What is the population frequency?To determine if the population is in Hardy-Weinberg Equilibrium, we need to compare the observed genotype frequencies to the expected genotype frequencies under the assumptions of the Hardy-Weinberg Equilibrium.
Let's define our variables:
p: the frequency of the dominant allele (in this case, the allele for purple petals)q: the frequency of the recessive allele (in this case, the allele for white petals)Under the assumptions of Hardy-Weinberg Equilibrium, the expected genotype frequencies are:
p^2 for the frequency of homozygous dominant individuals (PP)2pq for the frequency of heterozygous individuals (Pp)q^2 for the frequency of homozygous recessive individuals (pp)We can use the following equation to calculate the expected genotype frequencies:
p^2 + 2pq + q^2 = 1
Now let's plug in the numbers we have:
Total number of individuals (N) = 552
Number of individuals with purple petals (n) = 546
The frequency of the dominant allele (p) can be calculated as the square root of the frequency of individuals with purple petals:
p = √(n/N) = √(546/552) ≈ 0.982
The frequency of the recessive allele (q) can be calculated as 1-p:
q = 1 - p ≈ 0.018
Now let's calculate the expected genotype frequencies:
p^2 = (0.982)^2 ≈ 0.964
2pq = 2 x 0.982 x 0.018 ≈ 0.035
q^2 = (0.018)^2 ≈ 0.0003
The expected genotype frequencies are:
PP: 0.964 x 552 ≈ 531
Pp: 0.035 x 552 ≈ 19
pp: 0.0003 x 552 ≈ 0.2
Now let's compare the observed genotype frequencies to the expected genotype frequencies:
Number of individuals with genotype PP: unknownNumber of individuals with genotype Pp: unknownNumber of individuals with genotype pp: 552 - 546 = 6
We don't have enough information to calculate the observed genotype frequencies for PP and Pp, so we cannot directly compare the observed and expected genotype frequencies.
However, we can check if the conditions of Hardy-Weinberg Equilibrium are met:
Random mating: We don't have information on this, so we assume that mating is random.No mutation: We assume that there are no new mutations in the population.Large population size: With 552 individuals, the population size is reasonably large.No gene flow: We assume that there is no migration of individuals into or out of the population.No natural selection: We assume that there is no differential survival or reproduction based on the genotype.If all these conditions are met, then the population is in Hardy-Weinberg Equilibrium. In this case, we can assume that the population is in Hardy-Weinberg Equilibrium since we don't have any reason to believe that the conditions are not met.
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How would an air mass that formed over the north pole differ from an air mass that formed over a warm
ocean?
Answers
An air mass that formed over the North Pole would differ from an air mass that formed over a warm ocean in several ways.
Air masses are large bodies of air with similar characteristics that form over a specific region of the Earth's surface and can travel long distances before encountering a different air mass that alters its characteristics. The characteristics of an air mass depend on the region over which it forms.
The air mass that forms over the North Pole would be cold and dry due to the absence of sunlight and the Arctic's high latitudes. Arctic air masses are characterized by a high pressure system that circulates air clockwise. This rotation traps cold air over the region and prevents it from mixing with the surrounding air masses.
The air mass that forms over a warm ocean would be warm and moist. The ocean surface warms the air above it, and the air acquires moisture through evaporation. The warm air then rises, causing low-pressure areas over the ocean and pulling in moisture-laden air from surrounding regions. This moist air mass travels over land, and its temperature decreases, causing it to lose its moisture content and form precipitation.
The moisture content in this air mass would be high, causing it to be humid. Air masses interact with each other and cause changes in weather patterns and climate. They also play a vital role in the Earth's energy balance and regulate temperature and precipitation patterns.
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12. What is the relationship between DNA and chromosomes?
A. DNA is tightly coiled chromosomes
B. Chromosomes are tightly coiled DNA
C. A section of DNA is called a chromosome
D. There is no relationship between DNA and chromosomes
Answers
Answer:
I believe your answer is A.
if this is a two pick answer than your answer is both A and B.
Explanation:
What is the relationship between a DNA molecule and a chromosome?
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Answer: A. DNA is tightly coiled chromosomes
Explanation:
The Arizona poppy has adapted to living in areas that receive less rain, but there are still periods of time that a drought occurs. What part(s) of photosynthesis would the plant not be able to perform if there is no rain? What would be the long-term effects on the plant if the drought were to continue? Explain your answer.
Answers
If there is no rain, the Arizona poppy would not be able to perform the light-dependent reactions of photosynthesis.
What are the stages of photosynthesis?Photosynthesis is a process that involves two main stages: light-dependent reactions and light-independent reactions.
Water is required in the light-dependent reactions to provide the electrons that are needed to generate ATP and NADPH, which are then used in the light-independent reactions to produce glucose.
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Look at the diagram below. Ray 1 from the Sun moves through air and falls on the surface of a lake. Ray 2 is a ray which travels from the surface of the lake at the point Ray 1 strikes the lake, and moves towards air. Ray 1 and Ray 2 make the same angle with the surface of the lake. Ray 1 bends towards the vertical when it enters the lake as Ray 3 Which statement is correct about Ray 3? Ray 3 is the part of Ray 1 which is reflected. Ray 3 is the part of Ray 1 which is refracted. The part of Ray 1 which is absorbed by the lake is represented by Ray 3. The angle Ray 3 makes with the lake equals the angle Ray 1 makes with the lake.
Answers
A transparent surface causes some of a light ray to be refracted and some to be reflected, as shown in the portion of Ray 1 that is reflected as Ray 2.
What is Ray?Ray is a distributed machine learning and other computations open source framework. It is made to give scalable distributed training and inference a flexible, high-performance platform. Ray offers fault tolerance, quick data sharing across nodes, distributed Python function execution, and efficient task scheduling.
Deep learning, reinforcement learning, computer vision, natural language processing, and other applications are among the many that Ray supports. Ray is simple to use and offers a versatile programming architecture that makes it possible for users to design, debug, and publish their applications quickly and easily. Additionally, Ray offers strong management, monitoring, and debugging capabilities for distributed computation.
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The diagram attached below,
Nasir is 12 years old. What outcome is MOST likely if his caregivers talk with him openly about sexuality?
He will soon come out as gay.
He will be less likely to contract an STI.
He will have sex by age 13.
He will marry by age 18.
Answers
He will be less likely to contract an STI.
Option B is the correct answer.
What is STI?STI stands for sexual transmitted infection. A sexually transmitted infection (sexually transmitted disease) is a serious condition that can develop after you have sex.
So if Nasir is 12 years old, and if his caregivers talk with him openly about sexuality, he will be well informed about dangers of premature sex and sexually transmitted disease.
Thus, he will be less likely to contract an STI.
The wrong choices in the given options are;
He will soon come out as gay.
He will have sex by age 13.
He will marry by age 18.
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Does the pharynx of human respiratory system have cartilage and epithelium?
Answers
Answer:
There is no cartilage but there is epithelium
Explanation:
The pharynx of the human respiratory system does not contain cartilage.
The pharynx, part of the human respiratory system, is a muscular tube that connects the nasal cavity and mouth to the larynx and esophagus. It serves as a passage for air and food. The gorge is made up of several regions, each with its own distinctive features.
The nasopharynx, the top part of the throat, contains no cartilage. Instead, it is lined with pseudostratified ciliated epithelium.This special epithelium helps to trap and transport mucus along with any particles or pathogens in the digestive system for elimination.
These regions also lack cartilage but are lined with stratified squamous epithelium. This type of epithelium provides protection from mechanical stress and potential abrasion caused by the passage of food and other substances down the pharynx.
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In a certain species of insect, the gene for long antennae is dominant over
the gene for short antenna. What is the probability of offspring with short
antennae resulting from a cross between an insect with short antennae and
an insect heterozygous (hybrid) for long antennae?
75%
O 25%
0%
O 50%
Answers
In a certain species of insect, the gene for long antennae is dominant over the gene for short antenna. Therefore the probability of offspring with short antennae resulting from a cross between an insect with short antennae and an insect heterozygous (hybrid) for long antennae is 50% and is therefore denoted as option D.
What is Probability?This is referred to as the branch of mathematics concerning numerical descriptions of how likely an event is to occur.
A cross between an insect with short antennae and an insect heterozygous (hybrid) for long antennae are:
Ss × ss = Ss Ss ss ss
Therefore the ss is 2/4 which is 50%.
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While listening to his heart with a stethoscope, the physician noticed a high-pitched, blowing, systolic murmur, heard best directly under the left nipple. A review of Roger's medical records shows no prior history of a heart murmur. What could be causing this new murmur
Answers
Answer:
Heart malfunction
Explanation:
high-pitched, blowing, systolic murmur indicates that he was having a heart issue with initial could lead to heart malfunction because normal heartbeats don't have a high-pitched sound or blowing.
3
Read the section "3. Fitness Suffers."
What does this section explain that other sections do NOT?
(A)
solutions to reduce the impact of space
(8)
problems with reduced blood flow
(C)
effects of changes in oxygen
(D)
causes of changes to muscles
Answers
Answer:
c..proble with reduced blood flow because it happens when the flow of oxygen is insufficient in our body and breathing becomes fast..
why are mutations considered important in evolution
Answers
Mutations are considered important in evolution because they are the ultimate source of genetic diversity.
Mutations are alterations in the sequence of an organism's DNA, caused by radiation or toxins in the environment. They can also form spontaneously during DNA replication.Mutations can have a variety of impacts. These are frequently dangerous or have little or no impact. However, changes in DNA sequence can occasionally be helpful to the organism.Beneficial mutations that offer a survival benefit or reproductive success are more likely to be passed on to subsequent generations, increasing their frequency in the population over time. This accumulation of favorable mutations is a driving factor in the process of evolution.Without mutations, there would be no supply of new genetic information, and evolution would be greatly hampered.
Answer:
Mutations are one of the fundamental forces of evolution because they fuel the variability in populations and thus enable evolutionary change.
Look at the food web shown above.
In this ecosystem, phytoplankton are considered to be
OA. producers
OB. decomposers
OC. consumers
OD. all of these
Answers
Sometimes patients with Dementia experience the inability to complete tasks.
Simple tasks such as getting dressed, brushing teeth, and eating become
overwhelming. This inability to perform familiar tasks is?
Forgetfulness
Agnosia
Apraxia
Delusions
Answers
Apraxia is the inability to carry out routine duties as they are explained in the context.
A neurological illness known as apraxia is characterised by the loss or impairment of the capacity to carry out or execute skilled or deliberate motions, even though the affected person is physically capable of doing so.
Apraxia in dementia patients might show itself as trouble with once-routine and familiar daily tasks like dressing, grooming, or eating. In contrast to other cognitive symptoms of dementia such as forgetfulness, agnosia (loss of sensory perception), and delusions, which are not explicitly connected to the inability to perform tasks, apraxia is separate from these symptoms.
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You make a Punnett square for a cross and find the results shown below.
Female
X
x
X
Homozygous
dominant
Heterozygous
Male
x
Heterozygous
Homozygous
recessive
L
Your prediction is that
of the offspring would have the dominant phenotype, and
offspring would have the recessive phenotype.
DONE
V
of the
Answers
Two rows and two columns make up a Punnett square. Uppercase "H" appears in column heading one. Lowercase "h" appears in column heading two. It starts with an uppercase H. Lowercase "h" appears in row heading two. Uppercase H in row 1 and uppercase H in column 1. Uppercase H, lowercase h, row 1, column 2. Uppercase H, lowercase h, row 2, column 1. Lowercase h, lowercase h, row 2, column 2.
Which children are the products of AA and AA parents?The combinations that are feasible are AA, Aa, and aa since each parent contributes one allele. Aa people display the recessive trait, whereas offspring with either an AA or an Aa genotype will have the dominant phenotype expressed phenotypically.
How is Punnett determined?The total number of boxes in your Punnett Square should be counted. You are then provided with the estimated total number of offspring. Subtract the (phenotype's prevalence in the population) from (the total number of offspring). To get your %, multiply the value from step 4 by 100.
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Answer:
75% 25%
Explanation:
cuz
This chart gives data on greenhouse gas emissions in the United States from 1990 to 2013. Which questions would help clarify the evidence in the chart? Graph of U.S. Greenhouse Gas Emissions by Gas, 1990-2013. Horizontal line, 1990-2013. Bottom to above, gases shaded are Fluorinated, Other greenhouse, Methane, Carbon Dioxide in million metric tons of carbon dioxide equivalents ranging from 0-8,000.
Answers
The questions that would help clarify the evidence in the chart are:
A. What percentage of total greenhouse gas emissions is caused by natural sources?
C. Why are carbon dioxide emissions so much higher than other greenhouse gases?
What are greenhouse gases?A greenhouse gas is a particular kind of gas that both absorbs and emits radiant radiation, which causes the atmosphere to warm.
Methane, nitrous oxide, carbon dioxide, and other manmade compounds are among the main greenhouse gases.
Carbon dioxide is cited as the most significant greenhouse gas since it now contributes the most to the warming caused by human activity,
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Complete question:
This chart gives data on greenhouse gas emissions in the United States from 1990 to 2013. Which questions would help clarify the evidence in the chart? Select ALL the correct answers.
1. What percentage of total greenhouse gas emissions is caused by natural source?
2. Should industries emitting carbon dioxide in huge amounts be fined or punished?
3. Why are carbon dioxide emissions so much higher than other greenhouse gases?
4. Why did the quantity of carbon dioxide emissions stay constant throughout the period?
5. What is the chemical formula for methane?
A double-slit interference pattern is created by two narrow slits spaced 0.20 mm apart. The distance between the first and the fifth minimum on a screen 58 cm behind the slits is 6.1 mm.What is the wavelength of the light used in this experiment?
Answers
The light utilized in this experiment has a wavelength of 525.86 nm.
Waves that interfere are generated by two coherent sources by double slits. (a) Because the slits are thin, light diffuses (spreads out) from each one. Both constructively (bright lines) and destructively (overlapping and interfering waves) (dark regions). Light passes through two slits, creating new dark areas. The interference of the light traveling through the slits results in the dark and light zones.
Light passing through one slit overlaps with light passing through the other slit as it approaches the screen.
slit separation d = 0.2 mm = 0.2 * \(10^{-3}\) m
distance from the slits D = 58 cm =0.58 m
The minimal distance behind the slits on a screen between the first and fifth positions is 58 cm, Y = 6.1 mm
Y = 6.1 * \(10^{-3}\) m
condition for 1 st minimum d sin θ = λ
d( y / D ) = λ
y = λD / d -----( 1)
condition for 5 th minimum d sin θ ' = 5λ
d( y ' / D ) = 5λ
y ' = 5λD / d -----( 2)
given y ' - y = Y
[5λD / d] -[λD / d]= Y
4λD / d = Y
from this wavelength of the light λ = Yd / 4D
= 525.86 * \(10^{-9}\) m
= 525.86 nm
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following are the types of functions performed by proteins in the human body
Storage
Support
Regulation
Defence
Select the appropriate type of function of proteins for each of the given descriptions
Description Type of Function
1. Recognition of foreign molecules ????
2. Receptors of extracelluar signals ????
Answers
Answer:
1. Recognition of foreign molecules - Defense
2. Receptors of extracellular signals - Regulation
Explanation:
List some human activities that cause deforestation.
Answers
Deforestation is the process of removing the trees of an area permanently. It can be prvoked by natural causes, but also by human activities such as: wood extraction, infrastructure expansion and oil extraction.
• Constructing new homes
• Eliminating wood
• Expanding farmland
• Constructing new architecture as a whole
All these activities cause deforestation, and humans are the primary influencers of them. With deforestation in place, the environment is an unhealthy place for everybody.
The picture shows a model of a cell.
W.
What is the main function of the part labeled Win the model?
A. To use energy from sunlight to make sugars
B. To store enzymes that break down food
C. To store water and other materials inside the cell
D. To hold and protect the DNA in the cell
Answers
Answer:
C. To store water and other materials inside the cell
Explanation:
The part labeled W in the diagram is the central vacuole. When full of water, the cells in a plant provide turgor pressure. When the central vacuoles in the cells are empty, the plant wilts.
2. Relative dating methods help scientists to
determine the age of the fossils within each layer
identify what rock types are present
identify the order in which rock units formed
assign a numerical date to each rock layer studied
Answers
Answer:
The correct answer is "identify the order in which rock units formed".
Explanation:
Relative dating methods are experimental approaches that allow to identify the relative order of past events. Instead of determining the absolute age of samples such as rocks or fossils, relative dating methods correlate which samples are older. Therefore, relative dating methods help scientists to identify the order in which rock units formed.