In 1957,Clear Lake in California was sprayed with DDT such that the water contained 0.02 ppm of DDT.After a period of time,fish in the lake were found to have DDT levels as high as 2000 ppm.This is an example of
A) biological magnification of DDT.
B) species resistance to DDT.
C) natural decomposition of DDT.
D) species tolerance of DDT.
Correct Answer:
Verified
Q2: Of the following pesticides and their LD₅₀s
Q3: Which of the following statements about early
Q4: An early source of phosphorus for agriculture
Q5: Plants incorporate phosphorus into
A)amylopectin.
B)RNA.
C)bacteria.
D)phosphoric acid.
Q6: Which fertilizer is also an explosive?
A)NBr₃
B)NH₄NO₃
C)NaI
D)Sr₃(PO₄)₂
Q7: Which of the following statements about humus
Q8: The Haber process results in
A)the conversion of
Q9: The LD₅₀ for aldicarb in rats is
Q10: DDT is particularly harmful to birds because
Q11: Uptake of potassium ions from the soil
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