The immediate results of the widespread use of pesticides and fertilizers included ________, but long-term results included ________

A) dramatic increases in crop yields; the evolution of pest resistance
B) the increased spread of malaria; delayed resistance to pesticides
C) global declines in agricultural productivity; worldwide distribution of DDT
D) global declines in undesirable pests such as mice and rats; increases in these pests


Answer: A

Biology & Microbiology

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What is the general effect of humans on the nitrogen (N) and phosphorus (P) cycles?

A. We greatly increase levels of N and P through the burning of fossil fuels. B. We cause levels of N and P in the environment to drop through our farming practices. C. We overuse N and P in our farming practices and cause high levels to enter the natural environment. D. We deplete levels of N and P in our farming practices and do not replenish them.

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Hawaiian honeycreeper diversity is best

described as an example of

a. behavioral isolation. b. morphological convergence. c. exaptation. d. adaptive radiation. e. sympatric speciation

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The proteome refers to the collection of open reading frames in a genome.

Answer the following statement true (T) or false (F)

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Kinases are responsible for the addition of ________ to other proteins

A) phosphorus B) cyclin C) phosphate D) nitrogen

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