Life over Time Crossword
This printable crossword puzzle on the topic of Ecology & Evolution has 15 clues. Answers range from 3 to 19 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
Is a membrane-covered structure that contains all of the materials necessary for life
A change that effects the activity of an organism
The maintenance of a stable internal environment
deoxyribonucleic acid
Two parents produce offspring that share the characteristics of both parents through the process
A single parent produces offspring that are identical to the parents through the process
The remains or imprints of once-living organisms
A group of organisms that are very closed related
Represents the largest differences among organisms
Made up of prokaryotes
Made up of all eukaryotes
An inherited trait that helps an organisms survive and reproduce in its environment
Within a species there are naturally occurring differences in traits
An important source of variations
Occurs when all members of all species died
