Atmosphere: A division on the environment that contains air and gases.
Biosphere: A division on the environment that contains living things.
Carbon Dioxide (CO2): A gas released by burning things or breathing out.
Event: Changes that take place within an ecosystem.
Fossil Fuels: Coal, Oil, and Natural Gas. Fuels that form in the geosphere that are burned for heat and electricity.
Geosphere: A division on the environment that contains rocks and minerals.
Hydrosphere: A division on the environment that contains.
Resource: A material used to make other things or live.
System: A collection of interdependent (things that rely on each other) parts enclosed within a defined boundary.