A recent assessment of the status of global amphibian populations iden

Question

A recent assessment of the status of global amphibian populations identified habitat loss as the single greatest identifiable factor contributing to amphibian declines. Habitat loss primarily results from the residential, agricultural, arboricultural, or recreational development of an area.

Anthropogenic conversion of land has caused significant reductions in the wetland, forest, and grassland habitat that amphibians require for their survival. Outright habitat loss probably has the greatest effect on amphibians, but habitat degradation, or the general decline in the health of a habitat, often results from environmental contamination, the introduction of exotic invasive species, or a reduction in required resources within a habitat, and similarly affects amphibians. Likewise, habitat fragmentation (the disruption or fragmentation of habitat into discontinuous or isolated remnants of viable habitat) emerges from isolated patches of habitat loss and can often have delayed effects on animal populations.  
 1 
 1. Which of the following statements about habitat loss is supported by the passage?

Select all that apply.

A. The role of habitat loss in the decline of global amphibian populations is the subject of current evaluation.
B. Outright habitat loss causes less damage to amphibian populations than either habitat degradation or habitat fragmentation.
C. Introducing non-native species to an area may prove detrimental to the native animal populations.

2  
 2. Throughout the passage, the author never takes the opportunity to

A. define a term
B. cite an authority
C. state a probability
D. qualify a statement
E. make an assertion

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Sajjad1994 · Answer

Official Explanation

1. Which of the following statements about habitat loss is supported by the passage?

Choice A  is supported by the passage: the opening sentence of the passage discusses a  “recent assessment”  of the status of global amphibian populations. Likewise,  Choice C  is supported by the passage: habit degradation, which negatively affects amphibians, can be caused by  “the introduction of exotic invasive species,”  that is, non-native species. Note that to receive credit for this question you must have chosen both correct answers, not just one. 
 
  Answer: A,C

Sajjad1994 · Answer

Official Explanation

2. Throughout the passage, the author never takes the opportunity to

The author never cites or quotes an authority.

Choice A  is incorrect. The author defines the term habit fragmentation.

Choice C  is incorrect. The author states a probability. He asserts,  “Outright habitat loss probably has the greatest effect on amphibians.”

Choice D  is incorrect. The author qualifies a statement. He first states,  “Outright habitat loss probably has the greatest effect on amphibians.”  He then qualifies what he has said by stating that habitat degradation similarly affects amphibians.

Choice E  is incorrect. The author makes several assertions. 
 
  Answer: B

A recent assessment of the status of global amphibian populations iden

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