Which of the following statements about competition between animals is TRUE? a-Competition may involve two lions fighting over prey
b-Competition may involve two birds battling over a nesting site
c-Competition may involve two cows eating grass in different fields.
d-Both A and B are correct.

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?