AP Environmental Science: ch 4 Flashcards

Textbook: Living in the Environment, Miller & Spoolman

891304948	biodiversity	variety of species, genetics, ecosystems	1
891304949	species	can produce fertile offspring	2
891304950	biome	terrestrial regions inhabited by life	3
891304951	evolution	genetic change over time	4
891304952	natural selection	organisms better adapted survive	5
891304953	artificial selection	humans select desirable traits	6
891304954	mutation	random changes in DNA molecules	7
891304955	adaptation	characteristic that helps organisms survive	8
891304956	differential reproduction	adapted individuals produce more offspring	9
891304957	geographic isolation	populations separate into different areas (allopatric)	10
891304958	reproductive isolation	separation of sexually reproducing species	11
891304959	extinction	complete disappearance of species	12
891304960	background extinction	normal extinction of various species	13
891304961	mass extinction	species disappear in short period	14
891304962	endemic species	species found in one area	15
891304963	species diversity	species richness and species eveness	16
891304964	niche	role of species in ecosytem	17
891304965	generalist species	have broad niche	18
891304966	specialist species	have narrow niche	19
891304967	native species	normally live in particular ecosytem	20
891304968	nonnative species	migrate into an ecosystem	21
891304969	indicator species	decline warns against ecosytem degradation	22
891304970	keystone species	affect many organisms in ecosystem	23