The functioning of which of the following explains the rapid mutation of HIV?
A) the way the protease functions
B) the way the reverse transcriptase functions
C) both a and b
D) neither a nor b
B
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The ice of a glacier that is retreating is still moving forward. Indicate whether the statement is true or false
What is NOT a method of solving resource problems?
A) changing societal goals B) changing consumption patterns C) changing technology D) altering population numbers E) all of the above are methods of solving resource problems
Most fish need a minimum of ________ parts per million of dissolved oxygen in seawater to survive for long periods
A) 0.4 B) 4 C) 40 D) 400 E) 4,000
What develops a pattern of many complex channels that divide and rejoin and when the sediment load is considerably larger in relationship to the volume of water?
A. meander B. floodplain C. oxbow lake D. braided stream