Environmental Science 1

225383173	ecology	the study of the interactions between organisms and thier environment
225383174	biotic	living factors in the environment
225383175	abiotic	nonliving factors in the environment
225383176	population	a group of individuals of the same species that live together in the same area at the same time
225383177	community	all of the populations of different species that live and interact in an area
225383178	ecosystem	a community of organisms and their nonliving environment
225383179	biosphere	the part of the Earth where life exists
225383180	herbivore	a consumer that eats plants
225383181	carnivore	a consumer that eats animals
225383182	omnivore	a consumer that eats a variety of organisms
225383183	scavenger	an animal that feeds on the bodies of dead animals
225383184	food chain	a diagram that represents how the energy in food molecules flows from one organism to the next
225383185	food web	a complex diagram representing the many energy pathways in a real ecosystem
225383186	energy pyramid	a diagram shaped like a triangle showing the loss of energy at each level of the food chain
225383187	habitat	the environment where an organism lives
225383188	niche	an organism's way of life and its relationships with its abiotic and biotic environment
225383189	carrying capacity	the largest population that a given environment can support over a long period of time
225383190	prey	an organism that is eaten by another organism
225383191	predator	an organism that eats other organisms
225383192	symbiosis	a close, long-term association between two or more species
225383193	mutualism	a symbiotic relationship in which both organisms benefit
225383194	commensalism	a symbiotic relationship in which one organism benefits and the other is unaffected
225383195	parasitism	a symbiotic relationship in which one organism benefits while the other is harmed
225383196	coevolution	long-term changes that take place in two species because of their close interactions with one another