10 terms

Evidence for Evolution

Artificial Selection
Artificially breeding for certain traits among plants and animals.
Animals that once walked on land but went back to living in the water
half life
length of time required for half of the radioactive atoms in a sample to decay
any inherited characteristic that increases an organisms chance of survival
survival of the fittest (natural selection)
The species that is able to reproduce and survive
vestigial organs
Organs in an organism that have no use (i.e. appendix)
Common Descent
The common traits of organisms ancestors
Homologous Structures
Structures that have different mature forms but develop from the same embryionic tissue
Descent with Modification
Each living species has descended with change in other species over time
Struggle for Existence
Members of each species compete regularly to obtain food