Ethylene has the formula C2H4. Which of the following is a correct description of ethylene?
A) Ethylene has only single bonds.
B) Ethylene has one double bond.
C) Ethylene has one triple bond.
D) None of these is correct.
B
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What type of deformation is shown in this photograph?
A) Displacement
B) Rotation
C) Internal strain of the rock
D) Columnar joints
Compared with falling on a wooden floor, a wine glass may not break when it falls to a carpeted floor because of the
A) lesser impulse in stopping. B) longer time to stop. C) both A and B D) neither A nor B
After the Gulf of Mexico began to form in the Late Triassic, the shallow restricted basin became
the site of extensive _______ deposition. Fill in the blank(s) with the appropriate word(s).
The largest amount of tropical rainforest is on the continent of ________
A) Africa B) Asia C) South America D) North America E) Australia