{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

C suggesting that only certain biocontrol agents

Info iconThis preview shows pages 2–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: C. suggesting that only certain biocontrol agents should be used to control plant or animal pasts. D. arguing that biocontrol agents involve risks, some of which may not be readily discerned. E. suggesting that mishaps involving biocon- troll agents are relatively commonplace. Answer:---------------------------------------------------------------------------------------------- 4 The passage suggests that the author would be most likely to agree with which of the following statements about the use of biocontrol agents? A. Biocontrol agent should be used only in cases where chemical pesticides have proven ineffective or overly dangerous. B. Extinctions and disruptions resulting from the use of biocontrol agents are likely to have increasingly severe commercial consequences. C. The use of biocontrol agents does not require regulation as stringent as that required by the use of chemical pesticides. D. The use of biocontrol agents may even- finally supersede the use of chemical pesticides in controlling unwanted species. E. The risks of using native biocontrol agents may be easier to predict than the risks of using nonnative biocontrol agents. Answer:------------------------------------------------------------------------------------------------------- 5 Which of the following is mentioned in the passage as an indirect effect of using a biocontrol agent? A. Reduction of the commercial value of a desirable animal species B. An unintended proliferation of a nontarget animal species C. An unforeseen mutation in a target species D. Diminution of the positive effects conferred by a nontarget animal species. E. Competition for resources with a largest species. Answer:------------------------------------------------------------------------------------------------------- 6 The example presented by the author in lines 14-23 most clearly serves to illustrate A. a situation in which a species is less vulnerable to biocontrol agents than it would have been to chemical pesticides. B. a way in which the introduction of a bio- control agent can affect a nontarget species. C. a nonnative agent’s adapting in an unpre- dictable way that results in damage to a new host. D. The contention that biocontrol agents can harm nontarget species by competing with them for resources E. the way in which indirect consequences from the use of biocontrol agents are most likely to occurs. Answer:------------------------------------------------------------------------------------------------------- 7 Which of the following most logically completes the argument below? The expansion of large-scale farming in Africa and Asia has destroyed much of the natural vegetation on which elephants have historically depended, forcing them to turn to cultivated land to satisfy their enormous appetites. As a result, farmers have lost millions of dollars worth of crops annually. Yet even if elephant sanctuaries were created on a widespread basis to guarantee elephants sufficient natural vegetation, the...
View Full Document

{[ snackBarMessage ]}

Page2 / 24

C suggesting that only certain biocontrol agents should be...

This preview shows document pages 2 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon bookmark
Ask a homework question - tutors are online