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ecosystem an area in which living things interact with one another and with nonliving things
population a group of organisms of the same species living together in an ecosystem
community all of the populations living in an ecosystem
habitat the part of an ecosystem in which an organism lives
niche an organisms's role in an ecosystem
diversity a measure of the number and variety of species in an ecosystem
producer an organism that makes its own food
food chain a sequence of connected producers and consumers
consumer an organism that eats other organisms
food web a group of connected food chains in an ecosystem
energy pyramid a diagram that shows that energy is lost at each level in a food chain
competition the struggle among organisms for limited resources in an area
symbiosis a close relationship between organisms of different species in which one or both of the organisms benefit
parasite an organism that benefits from its relationship with an organism that it lives in or on while the other is harmed
host the organism that a parasite lives in or on
natural resource a material that occurs in nature and is essential or useful to people
conservation the careful use of resources so that they will last as long as possible
recycle to process used products into new products by using the materials again
reuse to use items again after their original use
extinction the loss of an entire species
endangered species a species with so few individuals that it could die out
wetland an area of land that is covered by water all or much of the time
Created by: afredcoop