Communities of life exist on the seafloor that are correlated with the origin of life on Earth. Why?
a) early Earth's atmosphere was similar to many elements that seep from vents on the seafloor
b) abundant energy and uniform condition are at these vents.
c) chemosynthesizing bacteria utilize the resources at the vents.
d) only B and C
e) all of the above
E
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If oil and tar sands are included, where is the largest oil field in the world located?
a. Saudi Arabia b. Canada c. Kuwait d. United Arab Emirates e. Venezuela
During the afternoon the greatest temperature difference between the surface air and the air
several meters above occurs on a: a. clear, calm afternoon. b. clear, windy afternoon. c. cloudy, calm afternoon. d. cloudy, windy afternoon.
Carbon monoxide tightly binds to ________
Fill in the blank(s) with the appropriate word(s).
What is NOT a viable long-term solution to reducing the effects of beach erosion?
a. ?Learn to live with actively eroding beaches, rather than fighting natural processes. b. ?Move buildings and roads back from the beach after storms. c. ?Remove old dams on rivers feeding sand to the beach. d. ?Stabilize sea cliffs, so they don’t collapse onto beaches. e. ?Move cliff-top houses back from the cliffs to let cliffs erode.