Biological Evolution - CFHS Crossword
This printable crossword puzzle on the topic of Ecology & Evolution has 15 clues. Answers range from 6 to 12 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
Two unrelated organisms look alike (sharks & dolphins)
Refers to the variety of living things
When organisms disappear from the earth
He proposed the theory of evolution by natural selection
Formation of new species
Change in genetic frequency in a population over time
Preserved remains of ancient organisms
Structures that have no current function
Characteristic that helps an organism survive
Darwin's famous book: the ___________ of species
Process by which evolution occurs; natural __________
Name of the ship that Darwin traveled on
Organisms that share close common ancertors
Trees that show how organisms are related
The earth is about 4.5 _________ years old
