Corals are
A. cnidarians.
B. fungi.
C. plants.
D. sponges.
Answer: A
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Which type of food uses the most virtual water?
A. meatloaf B. salad C. veggie burger D. corn on the cob
What is a key problem with reservoirs?
A. They provide a means of generating electricity B. They provide a source of fresh water C. They increase the amount of evaporative losses D. They provide better flood control
____________________ is a mysterious disease that causes adult bees to disappear from their hives without a trace
Fill in the blanks with correct word
Acid precipitation
A) reaches lakes and rivers primarily by leaching through soil. B) is less of a problem downwind of areas that burn large amounts of coal. C) is caused by only one compound. D) is less of a problem in Scandinavia than in northern Canada.