Both global air temperature (above) and sea surface temperature (below) show a warming period beginning in
A. 1940.
B. 2010.
C. 1980.
D. 1860.
Answer: C
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A country's infant mortality rate is a good indicator of the state of its health care system
Indicate whether this statement is true or false.
When two lamps are connected in parallel to a battery, the electrical resistance that the battery senses is
A) more than the resistance of either lamp. B) less than the resistance of either lamp. C) neither A nor B
Which observation suggests that the continental crust did not form by the same processes that presently occur on Earth?
A) The crust is largely andesitic. B) The time frame is too slow. C) There is more water now so the processes must be different chemically. D) Magnetic records in the rocks show that the gravity was different.
In percolating rainwater, dissolved gases and the decay products of local vegetation increases the water's capacity to ________
A) evaporate B) condense C) drive chemical reactions D) freeze E) undergo mechanical weathering