"It has a consistent rate of neutral mutations from generation to generation" is the one among the following choices given in the question that <span>should be true of a molecule being used as a molecular clock. The correct option among all the options that are given in the question is the first option or option "a". I hope it helps you.</span>
Depends on what kind of sunflowers I would have.. I can look at the chances of me having more sunflowers being short stemmed, red, and both traits.
Explanation:
everything can be found in the picture
Answer:
they give the lungs a really big surface area. they have moist, thin walls (just one cell thick) they have a lot of tiny blood vessels called capillaries.
The walls of the alveoli are only one cell thick. This makes the exchange surface very thin - shortening the diffusion distance across which gases have to move. Each alveolus is surrounded by blood capillaries which ensure a good blood supply.Adaptations of the alveoli:
Thin walls - alveolar walls are one cell thick providing gases with a short diffusion distance. Moist walls - gases dissolve in the moisture helping them to pass across the gas exchange surface. Permeable walls - allow gases to pass through.
Explanation:
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