Tropical soils tend to be low in fertility because frequently the parent material of tropical soils is:

A) granite. B) limestone. C) igneous rock. D) shale.


A

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Which would be a good choice for an office?

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What two functions does the evaporator of a domestic refrigerator perform?

A. Filters and cools the air. B. Absorbs and dissipates heat. C. Humidifies and cools the air. D. Dehumidifies and cools the air.

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What combination of symptoms only occurs on a unit with an inefficient compressor?

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A welder can determine preheat, interpass or postheat temperature by:

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