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Earth Science Chapter 4

Across
Earths second layer
A resource being used right now
Nonliving resources
The effort to oversee and control the use of resources
Resources that have an unlimited supply
Down
Any material that we use from the environment
The belief that earth forming processes have always been the same
A resource that is not currently being used but cam be used in the future
Living resources
Resources that can't be replenished
Sun's size and location determines this
Earths outer layer
Earth's liquid middle