Answer: A. steppe and woodlands of Central Asia
Explanation:
The density of water is _____.
A. 1.0 g/mL
B. 0.1 g/mL
C. 10 g/L
D. none of these
Answer:
A. 1.0 g/mL
Explanation:
The density of water is 1.0 gram per milliliter.
What’s the answer ????????
Answer:
D: Electrons are transferred from one atom to another.
Explanation:
Protons are not involved in the covalency, and C, electrons are shared between two atoms, is the definition of a covalent bond, such as water. Ionic bonds form when two atoms, share (transfer) electrons to one another in order to fill the outer electron ring.
Hope this helps!
Kerstin is getting ready to graduate high school. She wants to become a cardiac perfusionist. Which best describes the path she should take to her career?
Answer:
four-year degree , master’s degree , certification exam from ABCP
Explanation:
Answer:
She should do a four-year degree , master’s degree , certification exam from ABCP
Explanation:
4. Examine the four trials shown in Model 2. Identify 3 conditions that are the same in each trial.
Answer: The water/ liquid, the lamp, and the container.
Explanation:
The water/ liquid, the lamp, and the container are the condition in scientific experiment.
Why is it good to do multiple trials in an experiment?
In a scientific experiment, trials are repetitions of the same protocol.
When we apply multiple trials of the same experiment so that the results are consistent and can not be change by random events.
The more number of trials in an experiment influences the stability and validity of the data.
It can reduce the effect of errors in experiment and thus increase the reliability of the results of an experiment.
The number of repeated trials may vary as greater the number of repeated trials, more will be the confidence of the data we get , the hypothesis will be supported.
The minimum number of trials are three times in an experiment.
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Which statement describes an interaction between the biosphere and the atmosphere that is related to photosynthesis? During photosynthesis, plant roots take in water from soil. During photosynthesis, plants take in carbon dioxide from the air. Through photosynthesis, energy stored in plants is released into the air. Through photosynthesis, energy stored in plants is transferred to humans who eat them
Answer:
Option B on edge 2020
Explanation:
The correct statement that relates the interaction between the biosphere and atmosphere during photosynthesis is ; ( B )
During photosynthesis, plants take in carbon dioxide from the air ( B )Photosynthesis is process whereby plants and algae ( green ) make use of sunlight and water in the presence of carbon dioxide obtained from the atmosphere to create their food while giving out oxygen back to the atmosphere.
Energy stored/created in plants are not released to animals through the air but Carbon dioxide present in the atmosphere is take into the biosphere by plants during photosynthesis.
Hence we can conclude that During photosynthesis plants take in carbon dioxide from the air .
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fossil fuels are harmful to the atmosphere because they emit
Answer:
Son todos los combustibles fósiles y se les dice fósiles porque han tardado millones de años en su formación. Entre los combustibles fósiles tenemos todos los derivados del petróleo, el gas Natural fosilizado acumulado dentro de la corteza terrestre y el carbón de piedra.
Explanation:
The following graph shows the leading causes of death among Americans in 2007.
Image courtesy of the National Institutes of Health (2007)
CLRD = Chronic Lower Respiratory Disease
Which of the following conclusions can be drawn from the graph?
A.
More Americans died from either heart disease or cancer in 2007 than all other causes combined.
B.
More people in America died from Alzheimer's disease in 2007 than in any other country.
C.
More Americans died from cancer in 2007 than strokes, injuries, and CLRD combined.
D.
Fewer people in America die from unintentional injuries today than they did in 2007.
The force of the blood against the walls of the arteries is known as.
Why should pets be allowed in school??
Answer:
Pets help students with emotional support on stressful things.
Explanation:
Hope this helps
Natural processes such as speciation and gradualism provide the genetic basis for
a. evolution
C. biogenesis
b. spontaneous generation
d. sexual reproduction
Answer:
A. Evolution
Explanation:
Natural processes like speciation create variation in species, making them have biodiversity and a diverse gene pool.
Gradualism also allows for species to change gradually over time.
Both of these processes allow for evolution to occur, as speciation can create more favorable traits that will be passed down with the process of gradualism.
So, the correct answer is A, evolution.
Natural processes such as speciation and gradualism provide the genetic basis for evolution. Thus, option A is correct.
What is speciation?Natural processes like speciation create variation in species, making them have biodiversity and a diverse gene pool. Gradualism also allows for species to change gradually over time.
Both of these processes allow for evolution to occur, as speciation can create more favorable traits that will be passed down with the process of gradualism.Traits may be defined as the appearance or manifestation of a character. In genetics, traits are also known as Phenotypes.
Natural selection always carries their successful or most favorable traits into the next generation and eliminates the unsuccessful or least favorable traits. Or in other words, natural selection states the occurrence of the most favorable variations.
Therefore, Natural processes such as speciation and gradualism provide the genetic basis for evolution. Thus, option A is correct.
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One advantage of branched sugar polymers is the availability of more ends for chemical reaction.
a. true
b. false
The one advantage of branched sugar polymers is the availability of more ends for chemical reactions. So, the statement is true.
What are branched sugar polymers?Polysaccharides are simply the monomers of thousands of monosaccharides units. The kind of polysaccharide formed will be based on the kind of monosaccharide units involved.
The branching of monomers helps in the formation of polysaccharides. Branching of glucose monomers in the formation of different polysaccharides. These are starch and cellulose present in plants and glycogen in animals.
These kinds of polysaccharides are made of a lot of monomers and that is caused by the branching. This kind of branching can also help in the addition of more monomeric units to make a longer polysaccharide chain.
Therefore, an advantage of branched sugar polymers is the availability of more ends for chemical reactions.
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Because the Earth’s orbit around the Sun is elliptical, A) Earth is not round in shape, but slightly dented near the poles. B) the distance between the Sun and Earth does not remain the same all the time. C) Earth’s axis is tilted 23.5° away from the perpendicular of its orbital plane. D) the equatorial plane and the orbital plane of Earth do not lie on the same plane.
Answer:
it’s b
Explanation:
got it right
2. Arizona is the 6th largest producer of this industrial mineral used for water purification:
O zeolites
Orhenium
O copper
O molybdenum
Ouranium
Answer:
copper
Explanation:
well can't explain
By-products of photosynthesis are glucose and
A. Oxygen
B. Carbon Dioxide
plsss need help fast!
Answer:
hey
Explanation:
B carbon dioxide is the answer
Answer:
A.oxygen
Explanation:
plants take in C02 and take out oxygen
why do many marine pollution experts consider oil to be among the least damaging pollutants introduced into the ocean?
Many marine pollution experts consider oil to be among the least damaging pollutants introduced into the ocean due to its relatively rapid degradation and the existence of natural processes that can help mitigate its impact.
While oil spills and discharges pose a significant threat to marine ecosystems, they are often considered less damaging compared to other pollutants for several reasons. Firstly, oil is a complex mixture of hydrocarbons that can undergo natural degradation processes, such as evaporation, dispersion, and biodegradation. These processes can help break down and reduce the concentration of oil in the water over time. Additionally, sunlight and wave action can further aid in the breakdown of oil, especially in warm and turbulent environments.
Furthermore, the ocean has natural mechanisms to cope with oil pollution. Microorganisms that specialize in breaking down hydrocarbons can consume oil and convert it into less harmful byproducts. In some cases, natural oil-eating bacteria can thrive and multiply in response to an oil spill, accelerating the degradation process. Additionally, physical factors like wave action, currents, and tides can help disperse and dilute oil, reducing its immediate impact on localized areas.
However, it is important to note that while oil may be considered less damaging compared to certain pollutants, it can still have severe consequences for marine ecosystems, especially in the short term. Oil spills can harm marine life, including fish, birds, and marine mammals, through direct contact, ingestion, and the destruction of habitats. The long-term impacts of oil pollution can also have cascading effects on food webs and ecosystems, which may take years or even decades to recover. Therefore, prevention, preparedness, and effective response measures remain crucial in minimizing the overall impact of oil pollution on the marine environment.
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Geologists determine the
geological history of an area by
examining rock layers in geologic
columns. The diagram shows
three geologic columns from the
same region that have not been
overturned.
A.
Place an arrow at each rock
layer boundary to represent a
missing layer of rock in each
of the three columns.
Next part in pic
The sample columns have two missing layers as follows:
Column 1: Layers 3 and 8 are missing. Column 2: Layers 1 and 7 are missing. Column 3: Layers 1 and 5 are missing. What is geology?Geology is a term to refer to the specialized science that focuses on the study of the composition and internal and external structure of the surface of the planet Earth, and the processes by which it has evolved throughout geological time.
In the image 3 columns are shown showing various layers of the Earth, however, each of it has 2 missing layers. To know which layers were missing from each one, we must analyze them to establish what a column with complete layers would look like and then compare the 3 samples with the model to know which layers are missing.
According to the previous process, it can be inferred that the missing layers in each column are:
Column 1: Layers 3 and 8 are missing. Column 2: Layers 1 and 7 are missing. Column 3: Layers 1 and 5 are missing.Note: This question is incomplete because the graph is missing. Here is the graph.
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Which immunodeficiency disorders affect polymorphonuclear leukocytes and monocytes?
Immunodeficiency disorders that affect polymorphonuclear leukocytes and monocytes include chronic granulomatous disease (CGD) and leukocyte adhesion deficiency (LAD).
Chronic granulomatous disease (CGD) is a primary immunodeficiency disorder characterized by defects in the ability of phagocytes, including polymorphonuclear leukocytes (neutrophils) and monocytes, to produce reactive oxygen species (ROS). ROS are crucial for the destruction of ingested microorganisms, and their absence leads to recurrent and severe bacterial and fungal infections.
Leukocyte adhesion deficiency (LAD) is another immunodeficiency disorder that affects polymorphonuclear leukocytes and monocytes. LAD is characterized by a defect in the adhesion molecules that mediate the attachment and migration of leukocytes to sites of infection or inflammation. This defect impairs the ability of leukocytes to reach the site of infection and effectively eliminate pathogens, resulting in recurrent and severe bacterial infections.
Both CGD and LAD are rare genetic disorders that can lead to significant immune system dysfunction. Diagnosis is typically made through laboratory tests that assess the functional capabilities of leukocytes. Treatment may involve antimicrobial therapy, immunomodulatory agents, and in some cases, stem cell transplantation to replace the defective immune cells. Early detection and management are crucial to prevent complications and improve the quality of life for individuals with these immunodeficiency disorders.
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Use the image to answer the questions.
B
с
is a producer
is a consumer.
Dna double helices are soluble in water but insoluble in alcohol. How do these physical properties reflect the chemical structure of the dna molecule?.
The structure of DNA double helices are hydrophilic due to their highly charged phosphate groups and hence are soluble in water.
DNA is highly polar because of its highly charged phosphate backbone. Water is also polar and thus dissolves DNA following the principle " like dissolves like ''. The DNA is composed of N-bases, phosphate backbone, and pentose sugar. N-bases are hydrophobic but are on the inner side of the structure.
Whereas, phosphates are hydrophilic and are on the outer side of the structure. The presence of phosphates outside the DNA structure makes it water-soluble.
In addition to this, H in water is positively charged and phosphates in DNA are negatively charged. This enables DNA to get dissolved in water. On the other hand, alcohol, being polar, reduces the affinity of hydrogen bonds with DNA, thus making it insoluble in alcohol.
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do living cells have a nucleus ?
Answer:
All living cells do not have a nucleus like bacteria has no well-developed nucleus.
Explanation:
Hope it will help you :)
The reactants for cellular respiration area. glucose and ATP.b. water and ATP.c. oxygen and ATP.d. glucose and oxygen.e. carbon dioxide and glucose.
Cellular respiration is a very important process for organisms because it is from it that part of the energy necessary for survival is generated.
In respiration, we consume oxygen and glucose and form carbon dioxide, energy, and water as products.
Therefore, we can say that the reactants of cellular respiration are oxygen and glucose. Therefore, option "D" is the answer.
Explain how synapses allow neurons to act as integrators; include the concepts of facilitation, temporal and spatial summation, and convergence in your explanation.
By analysing the synaptic inputs it receives and turning them into an output signal, a neuron can function as an integrator.
1. Convening:
2. Temporal Summation: When two stimulations are closely spaced apart, a greater depolarization results than with just one stimulation.
3. Spatial Summation: Although two stimuli occur concurrently, they do so at different locations (If spatial summation and temporal summation occur at the same time then you would get an action potential).
4. Convergence: This happens when a neuron combines several synaptic inputs into a single output.
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what cells carry messages from all parts of the body to the brain
a neuron..................
What is the twisted zipper shape of DNA called?
Answer:
\(I~am~beinggreat78~and~will~help~you!\)
The shape of DNA is called a Double Helix. This shape is often referred to as a, "spiral staircase".
how many codons can mutate to become nonsense codons through a single base mutation of the second base?
There are 64 codons, and only one codon (UGA) is a nonsense codon. Therefore, there are 63 codons that can mutate to become nonsense codons through a single base mutation of the second base.
A single base mutation of the second base of a codon can potentially lead to the formation of a nonsense codon, which results in premature termination of protein synthesis.
There are 64 possible codons, but only three of them serve as stop codons, which signal the end of protein synthesis. These stop codons are UAA, UAG, and UGA.
A single base mutation of the second base of a codon can lead to the formation of a different codon that codes for a different amino acid.
For example, the codon AUG codes for the amino acid methionine, but a mutation of the second base to G would result in the codon GUG, which codes for valine.
However, not all mutations of the second base result in a change to a different amino acid. If the mutation results in a stop codon, then protein synthesis will be terminated prematurely.
There are 16 possible codons that have a U as the first base and can potentially mutate to form a stop codon with a single base mutation of the second base.
This includes UAA, UAG, and UGA, as well as other codons such as UCA, UCG, UCU, and UCC.
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There are 64 possible codons in the genetic code, out of which three (UAA, UAG, and UGA) are stop codons or nonsense codons.
A single base mutation in the second position of a codon can potentially change the amino acid that is coded for, but not necessarily create a nonsense codon.
However, if the original codon was a sense codon (coding for an amino acid) and the mutation in the second position changes it to a stop codon, then it would become a nonsense mutation.
Out of the 64 codons, there are 16 possible codons where a single base mutation in the second position can result in a nonsense codon. These are: UAA, UAG, UGA, UAA, UAC, UAG, UAU, UCA, UCC, UCG, UCU, UGC, UGG, UGU, UUA, and UUC.
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PLEASE HELP ILL GIVE BRAINLIST
This model shows a human embryo. What can you determine about its development from the model?
It has a postanal tail.
It’s a vertebrate
It has pharyngeal arches.
It has fully developed organ systems.
With the given developmental model of the human embryo, we can determine that it has a postanal tail and it's a vertebrate. Therefore, option A as well as option B is correct.
What is a human embryo?A human embryo is a stage in the development of a human being that begins after fertilization and lasts until about eight weeks of gestation.
During this time, the fertilized egg divides itself and grows into a ball of cells that eventually implants itself into the uterus. The cells then differentiate and forms various structure and organs that make up a developing fetus.
The postanal tail is defined as the muscular region of the body that extends to the posterior region of the anus and aids in the locomotion and balance of the body.
As given in the question itself that the model is of the human embryo and since humans are vertebrates because they have a backbone and a skeletonized body. Hence, the correct option is A as well as B.
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HELP ASAP PLS! just need 1 question:( i don’t understand what it’s asking !:(
Answer:
As the prey population increases, there is more food for predators. So, after a slight lag, the predator population increases as well. As the number of predators increases, more prey are captured.
Explanation:
What does it mean when a planet is in a star's habitable zone?
A- It has oxygen in its atmosphere.
B-It has a day-night cycle and a seasonal cycle that resembles Earth's.
C-It has the right temperature to have liquid water.
D- it has signs of life
When a planet is in a star's habitable zone It has the right temperature to have liquid water.
The correct option is C.
Where is the habitable zone?The orbital region around a star known as the habitable zone is where an Earth-like planet would be able to support life and have liquid water on its surface. Since liquid water is necessary for all life on Earth, it is assumed that alien life would also require it for defining a habitable zone.
What is the Earth's habitable zone?For water to continue to be a liquid, the distance at which Earth orbits the Sun is ideal. The habitable zone, sometimes known as the Goldilocks zone, is defined as being this far from the Sun. Rocky exoplanets located in their stars' habitable zones are better candidates for detection of liquid water on their surfaces.
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Solar cells convert ... directly into...
Answer:
Solar cells convert sunlight to electricity
Explanation:
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rigor mortis usually sets in about nine hours after death occurs.true or false
Rigor mortis usually sets in about nine hours after death occurs. It takes roughly 12 hours for rigor mortis to become fully established and about another 12 hours for it to start fading away as the body begins to decompose.
Correct answer is : True
Rigor mortis usually sets in about two to six hours after death occurs. It takes roughly 12 hours for rigor mortis to become fully established and about another 12 hours for it to start fading away as the body begins to decompose. Rigor mortis, or body stiffening, is the result of a decrease in ATP after death.
ATP is required for the muscles to relax, and without it, they become rigid. Rigor mortis can last up to 48 hours, after which the body becomes increasingly pliable as the muscles decompose.
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