1992 and 1993 were cooler than average years primarily because
A) solar output dipped slightly.
B) El Niño occurred.
C) La Niña occurred.
D) Mount Pinatubo erupted.
E) ocean currents shifted significantly.
D
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Which of the following materials is not produced by erupting volcanoes?
A) Sandstone B) Basaltic lava C) Obsidian/glass D) Ash
In which state of matter are the attractive forces between molecules the weakest?
A) solid B) liquid C) gaseous D) None, the attractive forces are the same in all of them.
Thunder and lightning are normally associated with ________ clouds
Fill in the blank(s) with correct word
A ________ is an economically important material that cannot be replenished in a reasonable time frame, so once it has been consumed, there will not be any more
A) recycled material B) renewable resource C) nonrenewable resource D) plastic