________ are closed depressions found where land surfaces are underlain by limestone bedrock.
A. Sinkholes
B. Craters
C. Kettle holes
D. Cirque valleys
E. Inversions
Answer: A
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Which of the following occurs when DNA is transcribed to mRNA?
A) Both the exons and introns are transcribed in sequence. B) Both the exons and introns are transcribed, but their sequence is changed. C) Only the exons are transcribed. D) Only the intros are transcribed.
Which of the following is a disadvantage of clear-cutting?
A. low timber yield B. cannot reforest with fast-growing trees C. destroys and fragments wildlife habitats D. low profits in the short-term E. increases surface fires
The tidal range toward the center of an ocean basin with a rotary standing tide is ________ the range at the edges of the basin.
A. larger than B. of longer duration than C. about the same as D. smaller than E. None of these is correct.
According to the textbook, if the demographic transition model were to have a fifth stage, which country would most likely be called a stage 5 country?
A) China B) USA C) Germany D) Russia E) Japan