Which is produced when an egg and a sperm unite during a plant’s life cycle?
spore
meiosis
zygote
gametophyte

The two pieces of evidence that support the theory of the expanding universe are the red shift of light from distant stars and the existence of cosmic background radiation.

The correct answer is option B.

1. Red shift of light from distant stars: The observation of redshift in the light coming from distant galaxies provides evidence for the expansion of the universe. Redshift occurs when the light waves from an object moving away from an observer are stretched, causing a shift towards longer wavelengths. This phenomenon is consistent with the Doppler effect, where the wavelength of light appears to stretch as the source moves away. The redshift of light from distant stars indicates that galaxies are moving away from us and from each other, supporting the idea that the universe is expanding.

2. Existence of cosmic background radiation: The discovery of cosmic background radiation further supports the theory of the expanding universe. Cosmic background radiation is a faint, uniform microwave radiation that permeates the entire universe. It is believed to be residual radiation from the Big Bang, the initial event that is thought to have initiated the expansion of the universe. The presence of cosmic background radiation provides strong evidence for the hot, dense early stages of the universe and its subsequent expansion.

Based on the information provided in the diagram, it is not possible to determine the identity or nature of the celestial objects labeled X. The diagram only represents the expansion of the universe over time and does not provide specific details about individual celestial objects.

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Answer:

blood is both tissue and fluid.

Explanation:

it's a tissue because it's a collection of similar specialised cells that serves particular functions.

Answer:

When water falls and seeps into the ground it actually interacts with the lithosphere

Answer:

When you set your terrarium in the sun the water inside the terrarium will heat up and turn into water vapor in the air. This is called evaporation. When the water cools back down, it turns back into a liquid. You will see condensation water droplets sticking to the lid of your terrarium.

Explanation:

The population density of the 900 sheep in the given plot of land is 150 sheep per square kilometer.

The population density of 900 sheep in a plot of land that is 3.00 km by 2.00 km can be calculated by dividing the total number of sheep by the area of the land.

First, we need to calculate the area of the land. The area can be found by multiplying the length and width of the plot of land:

Area = length × width = 3.00 km × 2.00 km = 6.00 km²

Next, we divide the total number of sheep by the area to calculate the population density:

Population Density = Total number of sheep / Area = 900 sheep / 6.00 km²

Performing the calculation, we find:

Population Density = 150 sheep/km²

Therefore, the population density of the 900 sheep in the given plot of land is 150 sheep per square kilometer.

Population density is a measure of the number of individuals (in this case, sheep) per unit area. By dividing the total number of sheep by the area of the land, we obtain the population density in terms of sheep per square kilometer. In this case, the population density is 150 sheep/km², indicating that there are, on average, 150 sheep within each square kilometer of the land.

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Don Huberts of ShellHydrogen was referring to the fact that the world's dependency on fossil fuels will not end because we have run out of these resources.

.

Just as the Stone Age ended due to the emergence of new technologies, the world's reliance on fossil fuels will end because of the development of alternative energy sources. Huberts believes that we must find new and innovative ways to produce energy in order to reduce our dependance on non-renewable resources. This shift is already happening, with countries and companies investing in wind, solar, and other clean energy sources. Huberts' statement serves as a call to action for individuals, businesses, and governments to prioritize the development of renewable energy sources in order to reduce our impact on the environment and ensure a sustainable future. By investing in new technologies and embracing alternative energy sources, we can reduce our reliance on fossil fuels and create a better world for future generations.

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Answer:

Explanation:

astronomical units are used to measure the distance in space so it would be appropriate to measure the distance between the stars,galaxies, and planets .

Answer: B)

Explanation: Astronomical units are used to measure the distance in space so it would be appropriate to measure the distance between the stars, galaxies, and planets .

The cell wall protects the cell it acts like a barrier

The three biomolecules that are used for making ATP are Lipids (fats) , Carbohydrates and Proteins

The biomolecules also known as biological molecules serve a wide range of activities and they vary in shape and their size . It is also considered  essential to life because they help organisms develop, survive, and propagate. The biomolecules interact with one another  which play a role in the development of organisms .

There are four types of biological molecules which are carbohydrates which is used as an energy source , lipids which is used for storage and support , proteins is used for supporting essential vital functions and amino acids are the developing elements that make up proteins and nucleic acids for storing genetic information .

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Answer:

Plant cells having chloroplasts is not the only difference between them

Giraffe.

The other organisms mentioned either do photosynthesis or don`t apply to the statement. Giraffes are the only option able to take in oxygen and release carbon through the respiratory process.

Answer:

HAMBURGER???

Explanation:

Answer:

hamburger

Explanation:

Answer:

The correct answer is "Yamnaya".

Explanation:

In genetics, a population or genetic bottleneck is defined as a reduction on the size of a population as a result of an environmental effect or human intervention. Regarding the Y chromosome bottleneck, the Yamnaya is an ancient population that contributed the most due to its sex-biased and stratified culture. The Yamnaya were violent and left behind many male skeletons, where just few type of persons were able to reproduce.

Answer:

The correct answer would be -

RGCB daughter - 0%

RGCB sons - 100%

Explanation:

Red-green color blindness is a sex-linked recessive disease that means it will only express in absence of the normal allele that is present on X-chromosomes. As it is known that males have only one X-chromosomes therefore, the chances are more in males to be affected in presence of the recessive gene. In this given case women s RGCB and man has normal vision. The genotype of women would be both recessive alleles XcXc and genotype of man would be XY.

The gametes would be - Xc, Xc and X, Y

then the cross:

       Xc     Xc

X     XXc    XXc

Y    XcY      XcY

so the offspring would be -

Carrier female =  XXc (50% chance in total and 100% in daughters)

RGCB daughters = 0%

RGCB male =  XcY (100% in sons and 50% of total children)

Answer:

List of Cell Organelles and their Functions

Plasma Membrane

Cytoplasm

Nucleus

Endoplasmic Reticulum

Mitochondria

Plastids

Ribosomes

Golgi Apparatus

Microbodies

Cytoskeleton

Cilia and Flagella

Centrosome and Centrioles

Vacuoles

Explanation:

1. In the organ system, The circulatory system is responsible for providing gases, nutrients, and hormones around the body.

2. The organ system that helps waste gases such as carbon dioxide leave the body is the respiratory system.

3. The organ system that includes the brain is the nervous system.

4. The kidneys and the urethra are part of the urinary system.

1.The circulatory system is the organ system in charge of delivering nutrients, gases, and hormones throughout the body. It consists of the heart, blood vessels, and blood, which work together to transport oxygen, nutrients, hormones, and waste products throughout the body. The heart pumps oxygenated blood to the tissues, delivering nutrients and oxygen, while the blood vessels act as a network of highways to distribute these substances to cells and organs.

2. The respiratory system is the organ system that assists waste gases such as carbon dioxide in leaving the body. The lungs, airways, and respiratory muscle are all part of it. During respiration, oxygen is taken in and carbon dioxide is removed from the body. The lungs exchange gases by inhaling oxygen-rich air and exhaling carbon dioxide.

3. The nervous system is the organ system that contains the brain, as well as the spinal cord and nerves. The brain is the body's command and control Centre, coordinating and regulating many physical activities and processes.

4. The kidneys and the urethra are part of the urinary system. The urinary system is responsible for filtering waste products, excess water, and toxins from the blood, producing urine, and eliminating it from the body. The kidneys filter the blood, removing waste and excess substances, while the urethra is the tube that carries urine from the bladder to the outside of the body during urination.

These organ systems work together to maintain homeostasis and ensure the proper functioning of the human body.

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Answer:

Which organ system is responsible for transporting nutrients, gases, and hormones through the body?

✔ cardiovascular system

Which organ system helps waste gases such as carbon dioxide leave the body?

✔ respiratory system

Which organ system includes the brain?

✔ nervous system

The kidneys and the urethra are part of which body system?

✔ urinary system

Answer:

Answer is Windbreaks

Explanation:

Windbreaks is the soil conservation method would make the most sense for her to try. So, the correct option is B.

Soil conservation is defined as the "combination" of practices used to protect soil from erosion, treating soil as a living ecosystem, and recognizing that all organisms that feed on soil Make your home, play an important role in making a fertile healthy.

These methods involved in preventing soil erosion, denudation, erosion and pollution which include many methods mainly involved in agricultural techniques due to the close relationship of plants with the soil. Windbreaks is the type of soil conservation method.

Therefore, the correct option is B.

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Answer:

B. are identical to the chromosomes of the other daughter

Explanation:

Answer:

nose or nostrils, nasal cavity, mouth, throat (pharynx), and voice box (larynx)

Explanation:

The tissue that is characterized by the presence of cell bodies, dendrites, and axons is the nervous tissue that is in option C, as a neuron contains the nucleus and other organelles, etc.

Nervous tissue is a specialized cell that transmits and processes signals in the form of electrical and chemical impulses and is responsible for coordinating and integrating sensory and motor information.

Hence, the tissue that is characterized by the presence of cell bodies, dendrites, and axons is the nervous tissue that is in option C, as a neuron contains the nucleus and other organelles, etc.

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Answer:

Chloride ions play a critical role in maintaining the homeostasis of neurons by regulating the resting membrane potential. By minimizing accidental stimulation, chloride ions help to prevent the initiation of an action potential unless it is necessary, thus preserving the normal functioning of the neuron. This regulation is important in maintaining the stability and proper functioning of the nervous system, ensuring that signals are transmitted only when necessary and in the correct manner. In summary, the presence of chloride ions helps to maintain the homeostasis of neurons by preventing unnecessary stimulation and ensuring proper signaling.

Explanation:

Chloride ions (Cl-) play a crucial role in the maintenance of neuron homeostasis by regulating the resting membrane potential of neurons.

The resting membrane potential is the electrical potential difference across the plasma membrane of a neuron when it is not transmitting a signal. It is maintained by the selective permeability of the membrane to ions such as potassium (K+) and chloride (Cl-).

Chloride ions move in and out of the neuron, helping to balance the concentration of positively charged ions like potassium and sodium (Na+). If chloride ions are not present, the resting membrane potential may become too positive, making it easier for accidental neuron stimulation to occur and leading to an action potential when it should not occur.

This can disrupt normal neural activity and lead to problems with neuron function and communication. Therefore, the presence of chloride ions is important for the proper regulation of resting membrane potential and maintenance of neuron homeostasis.

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Water temperature for handwashing should be at least 100˚F (38˚C) , option "A" Helps  it removes oils from the hand that can hold bacteria

Lather your hands by patting them together with the soap. Lather the backs of your hands, between your fingers, and under your nails. Scrub your hands for minimum 20 seconds.

Thus, option "A" is correct, Water temperature for handwashing should be at least 100˚F (38˚C).

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Answer:

Giants and dwarfs dx training cate

The behavioral, humanistic, and cognitive approaches provide different perspectives on the origins and treatment of Jake's anxiety.

The behavioral approach would view Jake's anxiety as a learned response that has been reinforced over time. They might suggest that Jake's anxiety is a result of negative experiences or associations with his academic performance, leading to increased anxiety symptoms. Treatment would focus on identifying and modifying maladaptive behaviors through techniques such as exposure therapy and behavior modification.

The humanistic approach would emphasize Jake's self-actualization and personal growth. They might view his anxiety as a result of a discrepancy between his self-concept and the challenges he is facing in his major.

Treatment would involve providing a supportive and empathetic environment where Jake can explore his feelings and values, with the goal of helping him align his personal goals with his academic pursuits.

The cognitive approach would focus on Jake's thoughts and beliefs about his academic performance. They would suggest that his anxiety stems from negative and distorted thinking patterns, such as excessive self-criticism or catastrophic thinking.

Treatment would involve cognitive restructuring, helping Jake identify and challenge irrational thoughts, and developing more adaptive and realistic thinking patterns.

In contemporary psychology, these approaches are not seen as mutually exclusive, but rather complementary. Psychologists recognize that a multidimensional approach, integrating elements from different perspectives, can provide a more comprehensive understanding of psychological issues.

Treatment approaches often combine techniques from various approaches to address the unique needs of each individual, emphasizing a holistic and personalized approach to mental health.

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The light reactions produce ATP and NADPH, which are used in the Calvin cycle. The Calvin cycle produces glucose and other organic compounds, which are used in the light reactions.

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