Mass and_are two things that affect the strength of the gravitational force

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?

In which layer do organisms on earth love?

Which of the following explains why a tree is often used as a model to represent the principle of common descent