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Question: can all three questions be answered please 1 is it...

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can all three questions be answered please

1. is it possible for natural  selection to occur but a population to not evolve. Briefly describe a situation that could allow that to happen.

2. Each year, all the ginkgo trees in an area drop their leaves at nearly the same time, a phenomenon called "The Night of the Ginkgo". Give a plausible (not necessarily correct!), good scientific hypothesis for this observation.

3. Many terrestrial mammals weigh much less than a pound, yet the smallest fully marine mammal is the sea otter, which weighs over 30 lbs. as an adult. How might the surface area: volume ratio contribute to the large size of marine mammals?

a. Animals with high SA:V ratios retain heat more efficiently.
b. Animals with low SA:V ratio retain heat more efficiently.
c. Animals with high SA:V ratios generate more heat via higher metabolisms.
d. Animals with low SA:V ratio are able to take more prey.
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