Charles darwin used domesticated animals to provide evidence for evolution by natural selection. what is this evidence?
differences between breeds show that selection can cause species to change. differences between breeds show that selection can cause species to change.
b. the ancestors of domesticated animals can be found in the fossil record.
c. some domesticated animals die because the environment cannot support them all.
d. variation in domesticated animals is due to sexual reproduction.

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.