Ecosystems
Sources of Matter and Energy in an Ecosystem
Photosynthesis
Resources in an Ecosystem
Maintaining Biodiversity
100

A community of living organisms and their physical environment interacting as a functional unit

Ecosystems

100

An organism that can make its own food

Producers

100

A simple energy source which is a biproduct of photosynthesis.

Glucose

100

A common demand by two or more organisms upon a limited supply of a resource.

Competition

100

The variety of life on Earth, including all the different plants, animals, fungi, and microorganisms.

Biodiversity

200

Relating to the Earth or its land surface

Terrestrial Biome

200

Items which obtain energy by eating producers or other consumers, transferring energy through the food chain.

Consumers

200

A green pigment found in plants that absorbs sunlight for photosynthesis.

Chlorophyll

200

Members of the same species compete for limited resources.

Intraspecific Competition

200

The alteration or elimination of natural habitats, which can lead to species extinction and loss of biodiversity.

Habitat Destruction

300

Relating to water or living in water

Aquatic Biome

300

Break down dead organisms, recycling nutrients back into the environment.

Decomposers

300

Changes in an organism's structure or behavior that help it survive in its environment.

Adaptions

300

A form of competition in which individuals of different species compete for the same resources in an ecosystem.

Interspecific competition

300

The process of dividing large areas of habitat into smaller, isolated pieces.

Habitat Fragmentation

400

A forest made up of cone-bearing trees,  that have needle-like leaves and stay green all year

Coniferous Forest

400

The process of breaking down food to create energy for cells

Cellular Respiration

400

The smallest structural units of living matter and compose all living things.

Cell

400

Overexploitation of a resource, even if initially abundant, can lead to its depletion and subsequent population decline.

Resource Depletion

400

A close, long-term relationship between two or more different species of organisms

Symbiosis

500

A forest made up of trees that shed their leaves each year, usually in the fall, to prepare for winter.

Deciduous Forest

500

A process in which one or more substances, the reactants, are converted to one or more different substances, the products.

Chemical Reaction

500

A chemical process that breaks down glucose and other biological fuels to produce energy for cells.

Cellular Respiration

500

A linear pathway that shows how energy and materials move from one species to another

Food Chains

500

Any positive benefit that wildlife or ecosystems provide to people.

Ecosystem Service

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