is that part of Earth in which life can exist

is that part of Earth in which life can existall of the water on, under, and above the Earth

is the part of Earth which is composed mostly of rocks; the crust and outer mantle

a natural resource of which a finite amount exists, or one which cannot be replaced with currently available technologies

a natural resource that can be replaced

resources that are obtained from the earth

come from the decay of organisms buried in sediments that are pressed tightly together for millions of years, at very high temperatures. These nonrenewable resources are rich in energy.

are man-made materials and substances. Some examples of synthetic materials are plastics, medicines, and new fuels.

electrical power is produced by falling water that turns a turbine generator.

is a natural, solid substance found in rocks; each having a specific chemical makeup.

is the ability to do work or cause change; the ability to move an object some distance

is the energy released when the nucleus of an atom is split apart (during fission) or combined with another nucleus (during fusion).

Is the energy that comes from the sun.

is the introduction of any harmful substance or form of energy into the environment at a faster rate than it can be cleansed.

toxic precipitation. It results largely from the burning of fossil fuels, such as coal, gasoline, and fuel oils.

all the living and nonliving things in an area that interacts with each other

To be able to keep using something for a long time without it running out

To change

is the process by which something is used up or destroyed

per person

is the amount of time between two events.