Liquefied petroleum gas consists of
a. Methane
b. butane and propane
c. Ammonia
d. nitrogen oxides
e. Ethanol
B
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The hydrologic cycle would be affected by a warming climate because
A. evaporation would result in less water in the hydrologic cycle. B. increased numbers of cloud would reduce sunlight. C. snow melt will occur earlier in the year. D. evaporation of water from the ocean would decrease.
How much of Earth's primary productivity is used or preempted by humans?
What will be an ideal response?
Hot steam that issues from a pressure cooker expands and
A. can cause severe burns. B. cools. C. increases in temperature. D. all of the above
A negatively charged rod is brought near a metal can that rests on a wood table. You touch the opposite side of the can momentarily with your finger. The can is then
A) positively charged. B) negatively charged. C) uncharged. D) charged the same as it was.