Walden Pond Which statements describe the Walden Pond ecosystem?

It has the same amount of oxygen near the surface as it
does at at bottom.

In the african savanna, more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

How does the nervous system affect the excretory system?

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?