1	organism		_____	model that links organisms by their feed relationships
2	population		_____	all organism and the part of Earth where they exist
3	community		_____	non-living things (moisture, temperature, wind, sun, soil, minerals)
4	ecosystem		_____	collection of organisms and non living things in an area
5	biome		_____	behaviors that improve the fitness for both individuals
6	biosphere		_____	any individual living thing
7	abiotic factors		_____	environmental resistance that affects a population regardless of population density
8	biotic factors		_____	collection of all the different populations that live in one area
9	biomass		_____	establishment and development of an ecosystem that was previously uninhabited
10	food chain		_____	regional or global community of organisms characterized by climate and plants that thrive there
11	food web		_____	one organism hunts and kills another organism for food
12	energy pyramid		_____	total dry mass of all organisms in a given area
13	mutualism		_____	relationship between two species in which one organism benefits by harming another organism
14	parasitism		_____	reestablishment of a damaged ecosystem in an area where he soil was left intact
15	commensalism		_____	ecological relationship in which two organisms attempt to obtain the same resource
16	predator-prey		_____	model that shows the complex network of feeding relationships within an ecosystem
17	cooperation		_____	environmental resistance that affects a population that has become overly crowded
18	competetion		_____	model that compares energy used by producers, primary consumers, and other trophic levels
19	mimicry		_____	the ability an organism develops to imitate one or more traits from an unrelated organism to obtain some benefit
20	density-dependent limiting factor		_____	relationship between two species in which one organism benefits but the other organism is not affected
21	density-independent limiting factor		_____	relationship between two species in which each species benefits
22	primary ecological succession		_____	all the individuals of a species that live in the same area
23	secondary ecological succession		_____	living things (plants, animals, fungi, bacteria)