Mr. Nerboso - Ecology

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Ecosystem

all the organisms that live in an area together with the nonliving things in the environment.

Species

a group of organisms that can mate and produce offspring that in turn can produce more offspring.

Population

all the members of a species living in a particular area at a particular time.

Community

all the populations sharing a specific area or region.

Adaptation

structure, behavior, or other trait in an organism that helps it to survive in its environment.

Symbiosis

a close relationship between two species.

Mutualism

a symbiotic relationship in which both species benefit.

Commensalism

a type of symbiosis in which one species benefits while the other seems to be unaffected.

Parasitism

a type of symbiosis that occurs when an organism called a parasite feeds on the cells, tissues, or fluids of another organism call a host.

Host

organism that supports a parasite.

Producer

use the energy of the sun to produce their own food (plants).

Consumer

any organism that gets its food by eating other organisms.

Decomposer

organism that feed on the remains or wastes of other organisms.

Scavenger

eat the remains of organisms left behind by other animals.

Food Chain

traces the path of energy as it moves from one organism to the next in an ecosystem.

Food Web

a system of several overlapping food chains.

Energy Pyramid

diagram that shows the flow of energy through a food chain.

Photosynthesis

chemical process by which plants use light energy to make sugar from water and carbon dioxide.

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