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Mrac [35]
3 years ago
12

A group of students are walking in the park and one of them takes a picture of a pollen grain that is been blown by the wind wha

t caption can the student use for this picture
Biology
1 answer:
posledela3 years ago
5 0

Gene flow at work.    

Gene flow at work.    





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Select a type of renewable energy
ivolga24 [154]
Solar energy, wind energy, hydropower, geothermal energy, and biomass energy. These types of energy sources are different from fossil fuels, such as coal, oil, and natural gas.
8 0
3 years ago
The ____________ in the alveoli is 40 mm Hg and that of the blood entering the pulmonary capillaries is ____________ . This caus
Oxana [17]

Answer:

The <u>PCO₂</u> -carbon dioxide partial pressure- in the alveoli is 40 mm Hg and that of the blood entering the pulmonary capillaries is <u>45 mmHg</u>. This causes <u>carbon dioxide</u> to diffuse down its partial pressure gradient from the blood into the alveoli.

Explanation:

Gas exchange is a physiological process that involves the entry of oxygen into the body and tissues and the exit of carbon dioxide, a product of metabolic reactions.

At the pulmonary level, gas exchange occurs between the alveoli and the alveolar capillary, and the diffusion of gases across the alveolar-capillary barrier is dependent on a pressure gradient due to the partial pressure of gases.

In the case of CO₂ the diffusion goes from where the partial pressure is higher to where it is lower, i.e. <u>from the alveolar capillary, where the PCO₂ is 45 mmHg, to the pulmonary alveolus, where the PCO₂ is 40 mmHg</u>.

Learn more:

Gas exchange brainly.com/question/4469204

6 0
3 years ago
which statement is a hypothesis? A)If the temperature increases, then crickets will chirp more. B)crickets are cooler than grass
Leto [7]

Answer:

C) Does the temperature affect how much crickets chirp

Explanation:

A hypothesis is a question that you test through study and experimentation. Basically a hypothesis is an educated guess that you attempt to prove write(it could be wrong) through an experiment

5 0
3 years ago
Read 2 more answers
Which of the following is an advantage of sexual reproduction over asexual reproduction? I. Sexual reproduction is more rapid an
weeeeeb [17]
The answer is II.Sexual reproduction results in more diversity
5 0
3 years ago
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Describe natural selection- when does natural selection occur?
sashaice [31]

Answer:

The process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin, and it is now regarded as be the main process that brings about evolution.

Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.

7 0
3 years ago
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