Zooxanthellae are ________.
A. used in the treatment of wastewater
B. symbiotic algae that provide energy to many species of corals
C. an invasive kelp species in the Indian Ocean
D. bacteria that fix nitrogen in ocean sediments
B. symbiotic algae that provide energy to many species of corals
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Natural processes move from states of
A. lower order to higher order. B. disorganization to organization. C. imbalance to equilibrium. D. higher order to lower order.
Why are cloudy nights typically warmer than clear nights?
What will be an ideal response?
The insolation received at Earth's surface is
A) usually low at the equator. B) generally greater at high latitudes because of daylength. C) greatest over low-latitude deserts with their cloudless skies. D) inadequate to sustain life.
At sea level, the pressure of the atmosphere is about ________ kg/cm2
A) 8.2 B) 6.7 C) 2.6 D) 1.0