The when all individuals of a species have died - that no longer has any known living individuals is ...

 The change over time in populations of related organisms is ...

The group of similar organisms that can breed and produce fertile offspring is ...

The variety of life in the world or in a particular habitat or ecosystem is ...

The resemblance of one species to another species is ...

The adaptation that enables species to blend in with their environments is ...

The remains or traces of plants and animals that lived a long time ago, found in rocks is ...

The characteristic of a species that enables the species to survive in its environment is ...

The  process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variations is ...

The person who studies plants and animals by observing them is ...

The breeding of organisms for desired characteristics is ...

The slight difference in the appearance of individual  members of a species is ...

A British naturalist, renowned for his theories of evolution and natural selection is ...

The body part that has lost its original function through evolution is ...

The study of similarities and differences among structures of living species is ...

The body part found in multiple species that is similar in structure and position but different in function is ...

The body part found in multiple species that performs a similar function but differs in structure is ...

The intermediate or in-between forms that show the stages of evolution is ...