Evolution Crossword
This printable crossword puzzle on the topic of Ecology & Evolution has 10 clues. Answers range from 4 to 21 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
And unstable element that breaks down into a different element
A type of fossil fuel formed when a shell or other hard part of an organism dissolves leaving an empty space in the shape of the part
The millons of fossils that scientist have collected
A fossil formed when materials replace all or part of the organism
A well tested concept that explains a wide range of observations
The theory that evolution occurs slowly but steady
The difference between individuals of the same species
The theory that species evolve during short periods of rapid change
A type of fossil that forms when Matt mode filled in with materials that then Harden
The preserved remains or traces is or organism that lived in the past
