8 terms

Theory of evolution

a process in which something passes by degrees to a different stage (especially a more advanced or mature stage)
Artificial selection
selection by humans for breeding of useful traits from the natural variation among different organisms
(physiology) the responsive adjustment of a sense organ (as the eye) to varying conditions (as of light)
Natural selection
a natural process resulting in the evolution of organisms best adapted to the environment
the remains (or an impression) of a plant or animal that existed in a past geological age and that has been excavated from the soil
(biology) an organism that has characteristics resulting from chromosomal alteration
a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
Fossil record
chronological collection of life's remains in sedimentary rock layers

Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com.
Click to see the original works with their full license.