This is a warming of the planet due to carbon dioxide and hear retention.

This is the scale used to describe how acidic or basic a solution is. This affects the enzymes within living systems.

This is the contamination of an environment beyond natural correction.

An organism facing extinction through destruction of habitat; the process may threaten the survival, abundance, or evolutionary development of the species.

This is the ceasing of the existence of any particular species.

A pathway by which a chemical element or molecule moves through both biotic and abiotic compartments of an ecosystem.

A process of land use change in which plants and animals which previously used the site are displaced or destroyed. Generally this results in a reduction in biodiversity.

A theory of overall increase in world near-surface air and ocean temperatures which may be caused by additional heat being trapped by greenhouse gases.

Any living organism which is "in danger of extinction throughout all or a significant portion of its range".

This was formerly used as a refrigerant and as a propellant in aerosol cans. These chemicals damage the ozone layer of the Earth.

Which would be found in a climax community?

Primary succession would most likely occur after:

Plant cells undergo photosynthesis to produce glucose, a usable form of energy. What reactants are needed for photosynthesis to occur?

Producers > First-Level Consumers > Second-Level Consumers > Third-Level Consumers > .....

If a population grows larger than its environmental carrying capacity, then:

What effect to chlorofluorocarbons have on the atmosphere?