When mantle peridotite partially melts beneath an oceanic ridge, ________ magma is produced
A) andesitic or intermediate
B) basaltic or mafic
C) rhyolitic or felsic
D) granitic or felsic
Answer: B
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An increase in air pressure will cause the mercury in a barometer to
A) boil. B) freeze. C) fall. D) rise.
Judge the following sentence according to the criteria given below: All marine algae must live near the ocean surface BECAUSE this is where food can be obtained
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.
Which of the following biomes is experiencing the greatest temperature increases resulting from global climate change?
A) Arctic tundra B) temperature deciduous forest C) temperate grassland D) chaparral E) tropical rainforest
How can an engineered cover on landfills reduce decomposition of the trash?
A. The cover keeps the landfill moist on the inside, preventing decomposition. B. The cap prevents hawks and blue jays from decomposing the trash. C. The cover causes paper to bond to plastic in the landfill. D. The cover keeps the landfill dry, which decreases the ability of bacteria to decompose trash.