13-C
14-B
15-D
16-A
17-C
Hope that helps!
Answer:
To move to another place for better living conditions
Explanation:
From research I think the theory is ‘Island Rule’ but what I know is that he realized that on isolated islands the sizes of animals would differ from their mainland relatives. This is because of the scarcity of foods on islands or the lack of predators
Answer:
The force that keeps the earth orbiting the sun is gravity also known as gravitational forces.
Explanation: