The effectiveness of DDT in agriculture allowed growers to
A) raise less resistant but more productive crops.
B) raise crops through the winter months.
C) raise vegetables without the need for pollinators.
D) eliminate irrigation in fields where it had been used previously.
Question 2
Which of the following is the most useful for analysis by environmental scientists of the impact of humans?
A) A farmhouse, plowed fields, and a stand of old growth forest nearby
B) A stadium packed with 50,000 people there to watch a football game
C) A remote region in Yellowstone National Park with restricted access
D) The student center building of a large university, busy with students at lunchtime
The difference between AZT-sensitive versus AZT-resistant reverse transcriptases
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