Judge the following sentence according to the criteria given below: Reef-building corals are not able to survive in nutrient-poor tropical waters BECAUSE they receive most of their nutrition by capturing tiny planktonic food with their stinging
tentacles. 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.
E
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White-hot sparks from a fireworks sparkler are harmless when striking your skin because
A. the energy per molecule is very low. B. they have a low temperature. C. the energy per molecule is high, but the total energy transferred is small. D. all of the above
Compared to the private automobile, public transportation offers more
A) energy efficiency. B) flexibility. C) pollution. D) privacy. E) range.
What complication does "duff" add to job of firefighters?
A. Duff makes a nearby larger fire appear to be less dangerous than it really is. B. Duff invisibly burns within the leaves of some plants. C. Duff can rain fire and embers down on unburned areas that are kilometers away. D. Duff allows fire to smolder in the soil and restart the fire again after it appears to be out.
The biome characterized by rapid nutrient cycling, high productivity, and very little organic matter in the soil is the ________
A) tropical rain forest B) grassland C) desert D) taiga E) tundra