Which of the following bases is not a lactam?
A) adenine
B) cytosine
C) guanine
D) None, they are all lactams.
D
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What may be a biological implication of global climate change?
A) In general, plants and animals will probably benefit from warmer temperatures. B) Since biodiversity is usually higher in warmer, milder climates, there will be little or no ecological implications. C) Since farmland may be lost, the habitats of plants and animals may increase in area. D) Plants and animals may not be able to move to a suitable habitat quickly enough.
A landform that is U-shaped is a:
a. cirque b. terminal moraine c. glaciated valley d. valley train
How many electrons can be accommodated in the 4p subshell?
A) 4 B) 6 C) 8 D) 18
The predominate system of agriculture practiced in arctic Russia is
A) subsistence cultivation. B) intensive subsistence wet rice not dominant. C) mixed crop and livestock. D) pastoral nomadism. E) dairy