What percentage of all wetlands has been lost to human disturbance?
A. 90%
B. 50%
C. 75%
D. 25%
Answer: B
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Which country currently has the largest population? Which country will most likely have the largest population in the year 2100, if current population growth rates continue?
What will be an ideal response?
Downdrafts weaken air-mass thunderstorms
Indicate whether the statement is true or false
If a marine animal has body fluids that have a lower salt content than the surrounding seawater, water will pass through the animal's body tissues from the ________ to the ________ because of ________.
A. outside; inside; osmosis B. outside; inside; electrolysis C. inside; outside; osmosis D. inside; outside; electrolysis E. None of these is correct; the salt moves, not the water.
Major exports of the U.S. to Japan include all of the following EXCEPT
A) grains. B) lumber. C) feed. D) automobiles. E) fruit.