This printable crossword puzzle has 10 clues. Answers range from 6 to 16 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
The change in species over time
A group of organisms that are similar and can breed
Species changing over time
One species turns into a new species
All species descend from a...
A naturalist who proposed natural selection
Has four main principals
Causes competition for resources
Differences among a population
Preserved remains of organisms