From climate records it is clear that ________
A) a runaway greenhouse effect threatens to kill life on Earth
B) the scientific notion of global warming seems to be in error
C) Earth's temperatures have actually decreased substantially in the last 100 years
D) humans created the greenhouse effect
E) there has been warming in the last 100 years
Answer: E
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Bacteria are a valuable source of protein for other marine organisms.
Answer the following statement true (T) or false (F)
Independent of the actual salinity, the ratios or proportions of the major dissolved constituents of seawater such as chloride, sodium, and magnesium are relatively constant. (T/F)
a. true b. false
The amount of energy generated by a hydroelectric dam depends largely on ________
A) the temperature of water in the boiler and turbine B) the temperature of reservoir water C) latitude D) the volume of water released and the height of the fall E) the phase and position of the moon
Around an actively pumped well in an unconfined aquifer, a ________ may develop in the water table.
A. zone of saturation B. recharge C. sinkhole D. cone of depression