The dependence of all living cells on ____ to survive strongly suggests that simple, living molecules originated in the

ocean.


a. fresh water
b. saline water
c. carbon dioxide
d. oxygen
e. methane


b

Environmental & Atmospheric Sciences

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Seismic gaps represent

A. areas along an active fault where surface indications of the fault are absent. B. "locked" sections along otherwise active faults. C. periods of reduced or no seismic activity in the geologic record. D. areas where there is little or no risk of earthquake activity.

Environmental & Atmospheric Sciences

The three types of unconformities are ____________________, ____________________, and

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

Environmental & Atmospheric Sciences

What force, perpendicular to the surface, tends to hold material on a slope?

A. Normal force of gravity B. Shear force of gravity C. Friction D. Shear resistance

Environmental & Atmospheric Sciences

What characterized the Ordovician in terms of invertebrate life, and how does that relate to what was

happening geologically? What will be an ideal response?

Environmental & Atmospheric Sciences