Describe and discuss the difference between a craton and a shield. What will be an ideal response?


A shield is the Precambrian rocks that are exposed at Earth’s surface. The craton, or
continent’s ancient nucleus, is made of the shield as well as its platform, which consists of
buried Precambrian rocks.

Environmental & Atmospheric Sciences

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____________________ are essential portions of watersheds because they serve as the liaison between land and water resources.

Fill in the blank(s) with the appropriate word(s).

Environmental & Atmospheric Sciences

In what settings can metamorphic core complexes form?

What will be an ideal response?

Environmental & Atmospheric Sciences

Allocation is ________

A) the management of the location and relative amounts of different forest uses B) the loss of biodiversity of forest areas C) the creation of agricultural lands D) naturally reforesting specific areas E) the creation of even-aged stands for greater biodiversity

Environmental & Atmospheric Sciences

The fact that a threshold is expected to exist with all poisons is related to the idea that:

A. some things you are exposed to are not absorbed B. some things are safe and non-toxic C. eventually as dose increases effect will diminish until very little added effect occurs with increasing dose D. there is some small dose for every compound that is expected to be safe

Environmental & Atmospheric Sciences