Vocabulary
Food Chains & Webs
Ecosystem Levels
Community Interactions
100

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

Habitat

100

These organisms produce energy through photosynthesis or chemosynthesis.

Autotrophs

100

Two or more organisms of the same species.

Population

100

A relationship between two species in which one species benefits and the other is neither helped nor harmed.

Commensalism

200

Non-living factors in a community are called..

Abiotic factors

200

These organisms are herbivores, therefore they are called ______________ consumers.

Primary

200

Includes all of the area in which life is found on Earth.

Biosphere

200

A relationship between two species in which one species benefits and the other is harmed.

Parasitism

300

Something that only eats plants

Herbivore

300

These organisms are typically at the top of the food chain. They are called ____________ consumers.

Tertiary

300

Study of the interactions of living things and their environment.

Ecology

300

A relationship between two species in which both species benefit.

Mutualism

400

An organism that breaks down wastes and dead organisms.

Decomposer

400

This is a way to show how energy in a food web is allocated. Usually there is a large base and a pointed top.

Energy pyramid

400

The third Planet from the sun

Earth

400

An interaction in which one organism kills another for food.

Predation

500

A series of events in which one organism eats another and obtains energy. Usually written on one line.

Food chain

500

What is the percentage of energy LOST as it moves from producer to primary consumer to secondary consumer?

90%

500

Includes all of the living and non-living things in an area.

Ecosystem

500

Two or more organisms competing for the same resource.

Competition

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