parts of the environment that supply materials useful or necessary for the survival of living things

a resource that cannot be replaced

Coal, oil, natural gas, and other fuels that are ancient remains of plants and animals.

Nutrients that occur naturally in rocks and soil

A natural resource that can be replaced at the same rate at which the resource is consumed

renewable resource made up of oxygen, nitrogen, carbon dioxide and other gases.

natural resource that will not run out, no matter how much of it people use

energy that comes from the sun

power obtained by harnessing the energy of the wind.

the energy produced by heat within the earth

Release of harmful materials into the environment

The loss of ozone, which protects us from UV rays

air pollution that forms from the interaction between chemicals in the air and sunlight

An increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes)

precipitation, such as rain, sleet, or snow, that contains a high concentration of acids, often because of the pollution of the atmosphere

the addition of any substance that has a negative effect on water or the living things that depend on the water

any water that has been used by humans. This includes human sewage, water drained from showers, tubs, sinks, dishwashers, washing machines, water from industrial processes, and storm water runoff.

Addition of harmful materials into the soil.

a governmental agency with environmental protection regulatory and enforcement authority

Fuels to eventually replace dwindling supplies of fossil fuels, such as biodiesel and hydrogen.

combine the benefits of gasoline engines and electric motor to improve fuel economy

The ability to keep in existence or maintain. A sustainable ecosystem is one that can be maintained

Convert waste into reusable material.

a mixture of decaying vegetation and manure that is converted into soil