No links! pls help What process is occurring in the illustration?

a) classic ecosystem

b) climax community

c) primary succession

d) secondary succession

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?

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

Which are reasons cells undergo cell division?