Fossils
Population
What is the number of a species in an area.
Species
What is a groups of organisms that are similar and reproduce among themselves?
Giraffe necks over many years.
What is have gotten longer to adapt to eat leaves high in trees?
Close to DNA of Dogs
What is is Bear DNA?
What is the word for species producing more offspring than can survive?
Mutation
What is a change in DNA that results in a new trait?
Top layer of earth
What is the youngest layer?