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10-1, 10-2, and 10-3


living thing


an environment that provides the things an organism needs to live, grow, and reproduce

biotic factor

the living parts of a habitat

abiotic factor

the nonliving parts of an organism's habitat that include water, sunlight, oxygen, temperatures, and soil


a process in which organisms use water along with sunlight and carbon dioxide to make their own food


a group of organisms that are phisically similar and can mate with each other and produce offsprings which and mate and produce offsprings as well


all the members of one species in a particular area


all the different populations that live together in an area


the community of organisms that live in a particular area, along with the nonliving surroundings


the study of how living things interact with each other and their environments

birth rate

number of births in a population in a certain amount of time

death rate

the number of deaths in a population in a certain amount of time


moving into a population


leaving a population

limiting factor

an environment factor that causes a population to stop growing

carrying capacity

the largest population that an area can support


an organism that can make its own food


an organism that obtains energy by feeding on other organisms


eats plants


eats meat


eats both plants and meat


a carnivore that feeds on the bodies of dead organisms


An organism that breaks down wastes and dead organisms

food chain

a series of events in which one organism eats another and obtains energy

food web

the pattern of overlapping food chains in an ecosystem

energy pyramid

a diagram that shows the amount of energy that moves from one feeding level to another in a food web

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