What is the atmosphere
The mixture of gases that surround a planet
What is the hydrosphere
All of Earth’s water, taken together in all states of matter
What is the geosphere
The solid portion of Earth including rocks, soil, mountains, and materials deep within Earth
What is the biosphere
The system that includes all the living things on Earth
What is recycle
To use the materials in old things to make new things
what is the green technology
Innovative ways of using resources that minimize human impact on that environment