Highly productive areas of coastal upwelling are found along the ________ margins of continents, where surface currents are moving ________ the equator
A) eastern; away from
B) eastern; toward
C) western; away from
D) western; toward
D
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Guano, the excrement of seabirds, can accumulate into phosphate-rich rocks of commercial value. This island nation had an economy entirely based on the mining of phosphate deposits.
A. Nauru B. Bougainville C. Pitcairn D. Ruapehu
_______ organisms make their own nutrients. Fill in the blank(s) with the appropriate word(s)
Carbon dioxide is caused by the incomplete combustion of fossil fuels, while carbon monoxide is caused by complete combustion
Indicate whether the statement is true or false.
Microbursts
A) are an upward surge of warm air. B) result from dense air that has cooled from the evaporation of water. C) are most common when skies are clear. D) have become increasingly dangerous at airports around the United States. E) all of the above