theory of evolution Crossword
This printable crossword puzzle on the topic of Ecology & Evolution has 12 clues. Answers range from 6 to 20 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
Change over time.
A system of interrelated ideas used to explain a set of observations.
A trace of an ancient organism that has been preserved in rock.
Breeding organisms with specific traits in order to produce offspring with identical traits.
Competition between organisms for food and space.
Ability of an organism to survive and reproduce in its environment.
A trait that helps an organism survive and reproduce.
Survive and Reproduce most successfully.
A natural process resulting in the evolution of organisms best adapted to the environment.
Principle that all living things have a common ancestor.
Structures that are similar in different species of common ancestry
Organ that serves no useful function in an organism
