In the theory of natural selection, organisms produce more offspring that are able to survive in their environment
Explanation:
Organisms that formed index fossils are distinctive, widespread, abundant, and limited in geologic time. Because most fossil-bearing rocks formed in the ocean, the major index fossils are marine organisms.Apr 30, 2020
Answer:
migration
Explanation:
when the glaciers melt there is probably a surplus of water and so the people wouldnt want their homes to be flooded