What is the primary component of Earth’s current atmosphere?

a. carbon dioxide
b. oxygen
c. water vapor
d. nitrogen
e. argon


d

Environmental & Atmospheric Sciences

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Although traditional agriculture is common in many parts of the world, the United States primarily uses ____________________ agriculture for food production.

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

Environmental & Atmospheric Sciences

Since the earth turns ________ the tide wave tends to move ________ around Earth.

A. eastward; eastward B. northward; southward C. westward; eastward D. westward; westward E. eastward; westward

Environmental & Atmospheric Sciences

The increase in atmospheric oxygen during the Proterozoic was caused by ____

a. a decrease in worldwide volcanism. b. a decrease in the size of oceans.

c. photosynthesis by cyanobacteria. d. the appearance of land plants. e. formation of banded iron formations

Environmental & Atmospheric Sciences

A ____ fault would be expected at a divergent boundary

a. ?reverse b. ?thrust c. ?blind thrust d. ?strike-slip e. ?normal

Environmental & Atmospheric Sciences