atmosphere
The mixture of gases that surround a planet.
hydrosphere
All of earths water, taken together in all states of matter.
geosphere
The solid portion of earth including rocks, solid, mountains, and materials deep withing earth.
biosphere
The system that includes all the living things on earth.
recycle
To use the materials old things to make new things.
green technology
Innovation ways of using resources that minimize human impact on the environment.