Why is chemical cycling necessary for life on the earth?

What will be an ideal response?


The earth receives a continuous supply of energy from the sun, but it receives no new supplies of life-supporting chemicals. Organisms must continually recycle the chemicals they need in order to survive.

Environmental & Atmospheric Sciences

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The North American Great Lakes:

a. occupy kettles. b. are large tarns. c. are oxbow lakes. d. occupy former river valleys deepened by glacial erosion. e. occupy deflation hollows scoured out by the glacial wind.

Environmental & Atmospheric Sciences

Geologists are correlating past geologic events to see if there are correlations with climate changes

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

An earthquake with a high rating on the moment magnitude scale can receive a low rating on the Mercalli scale

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

____________ ____________ was the first to circumnavigate the world at high latitudes. What will be an ideal response?

Environmental & Atmospheric Sciences