Which of these is an example of the conversion of gravitational potential energy into kinetic energy? Group of answer choices

a wind-up spring making a toy car move across the floor

a person running on a level track

an apple falling from a tree to the ground

a rubber band being stretched to twice its normal length

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.

Darwin’s hypothesis about how life changes over time is now called?