In semiarid climates, grass roots transport much ________ from the B horizon to the A horizon
A) gravel
B) clay
C) phosphorus
D) calcium
E) uranium
Answer: D
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Judge the following sentence according to the criteria given below: Coral are not usually found close to areas where major rivers drain into the sea BECAUSE they require warm water
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.
The glaciated part of a thunderstorm is usually found at
A) the top of the storm. B) the middle of the storm. C) the bottom of the storm. D) throughout the entire storm.
Denitrification in sewage treatment systems requires
A) the bubbling of oxygen into waste sewage. B) the addition of water to waste sewage. C) an anaerobic environment. D) high-voltage electrical discharges.
One future prospect for predicting hurricane behavior is to monitor thermal anomalies in the ocean with _______________ sensors
Fill in the blank with correct word.