Most soil erosion is caused by
A) wind and moving water
B) photosynthesis
C) earthquakes
D) volcanoes
E) excess heat
Correct Answer:
Verified
Q21: Salt buildup may
A)increase crop growth
B)increase yields
C)eventually kill
Q22: Which of the following best describes how
Q22: Biological control of pests
A) costs more money
Q23: According to pesticide proponents, pesticides
A)work fast
B)increase profit
Q25: Which of the following can lead to
Q27: A hormone is
A) a new form of
Q28: Integrated pest management _ than pesticides.
A)requires more
Q29: The amount of irrigated land used to
Q30: Since 1945, approximately _ species of insects
Q31: Broad-spectrum pesticides may increase the number of
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