How long will it take to add another billion people to the world's population given the current growth rate?
A. 12 years
B. 2 years
C. 22 years
D. 50 years
Answer: A
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Which of the following exemplifies an opportunistic reproductive pattern?
A. human B. housefly C. rhinoceros D. saguaro cactus E. cow
The backshore ________.
A. is found between high- and low-tide levels B. is the same as the low-tide terrace C. is part of the foreshore D. lies under the surf zone E. is the high and dry part of the beach
At wilting point, no water remains in the soil
Indicate whether the statement is true or false
Which of the following is NOT a way in which fossils can be preserved?
A. They can be too small to see but can build diagnostic features in the rocks. B. They can be buried and decay, leaving a cavity in the rock. C. They can be preserved in ancient tree sap. D. They can be replaced by hard materials, such as silica. E. All of these are ways a fossil can be preserved.