What kind of heat pump uses the constant temperature of the earth as a source of heat in winter and as a store for heat in the summer?
A. geothermal
B. solar
C. wind
D. hydropower
E. biofuel
Answer: A
Environmental & Atmospheric Sciences
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Newspapers from 50 years ago may still be readable because trash can resist decomposition for centuries if it is not exposed to air, sunlight, water, and bacteria.
Answer the following statement true (T) or false (F)
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Circulation in the sea occurs in what levels?
a. Surface currents b. Middle currents c. Deep currents d. All of the above e. Both a and c
Environmental & Atmospheric Sciences