Fossil fuels represent ________
A) natural deposits of organic materials that formed long before life on Earth evolved
B) plants and algae buried millions of years ago
C) sustainable sources of energy that are underused today
D) the remains of fossil animals that lived a few thousand years ago
B
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The first domesticated animals were probably
A) horses. B) cattle. C) dogs. D) sheep
The United States uses much more of some commodities than it produces. Therefore, the United States imports from other countries to meet its needs. However, much of this trade imbalance is offset by the exportation of large quantities of
A) automobiles. B) grains. C) palm oil, spices, and cocoa. D) household goods (e.g., TVs, dishwashers, furnaces).
Which of the following statements about shield volcanoes is correct?
A) They occur in shield areas of Earth. B) They are subject to violently explosive eruptions. C) They form from mafic magma. D) They consist of tremendous quantities of pyroclastics.
Greenhouse gases warm the atmosphere because they absorb incoming solar energy before it reaches the earth's surface.
Answer the following statement true (T) or false (F)