Garbologists have discovered that trash in landfills is slow to decompose. Why is this?
A. Trash is compacted so tightly that the warm temperatures foster the growth of mold.
B. Trash is compacted so tightly that sunlight, water, and air are unable to reach it.
C. Measures enacted to prevent landfill pollution slow decomposition.
D. Trash is constantly mixed and turned over by bulldozers.
E. Methods of determining this are faulty; waste in landfills does decompose quickly.
Answer: B
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Indicate whether the statement is true or false
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A) are not affected by subsidence from Hadley circulation. B) are usually found on the eastern portions of continents. C) have large diurnal temperature ranges. D) show little seasonality in rainfall.
Which of the following is not a abiotic component of an ecosystem?
A) plants B) sunlight C) precipitation D) mineral nutrients
Judge the following sentence according to the criteria given below: Scientists have an excellent baseline from which to determine how pollutants have altered the marine environment BECAUSE the ocean was studied extensively before it was polluted
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct but the reason is incorrect. D) The assertion is incorrect but the reason is correct. E) Both the assertion and the reason are incorrect.