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Difficulty:
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Question Stats:
14% (02:10) correct
86%
(02:14)
wrong
based on 4171
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If 10% or more of a planet's total mass is water, there can be no freshwater environment on that planet as bodies of freshwater are produced by accumulation of natural precipitation on land. A planet without any freshwater environment is unlikely to harbour complex forms of life because they require a good amount of phosphorus to be present in absorbable form in their environment.
Which of the following can be inferred from the information provided above?
A. If 10% or more of a planet's total mass is water, natural precipitation cannot occur on that planet.
B. If 10% or more of a planet's total mass is water, there can be no dry land on that planet.
C. If 10% or more of a planet's total mass is water, there can be little phosphorus on that planet.
D. A planet without any freshwater environment is likely to have simple forms of life in abundance.
E. A planet without any freshwater environment is likely to contain no phosphorus at all.
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Which of the following can be inferred from the information provided above?
A. If 10% or more of a planet's total mass is water, natural precipitation cannot occur on that planet.
B. If 10% or more of a planet's total mass is water, there can be no dry land on that planet.
C. If 10% or more of a planet's total mass is water, there can be little phosphorus on that planet.
D. A planet without any freshwater environment is likely to have simple forms of life in abundance.
E. A planet without any freshwater environment is likely to contain no phosphorus at all.
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29 Mar 2019, 05:27
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Pranithare
A key aspect of correct answering Critical Reasoning questions is noticing details.
In this case, in order to eliminate C, you have to notice the detail that the passage does not say that phosphorus is not available on the planets described. It says that the life forms require "phosphorus to be present in absorbable form," a statement that does not indicate that phosphorus is not present, only that it is not present in absorbable form.
So, C, which says that "there can be little phosphorus," is not supported.
B, however, is supported, because the passage says,"If 10% or more of a planet's total mass is water, there can be no freshwater environment on that planet as bodies of freshwater are produced by accumulation of natural precipitation on land."
If the reason that there is no fresh water is that there has to be land in order for fresh water to be present, it seems that there is no dry land, as B says.
Granted, it may be possible that there is a tiny bit of dry land, but not enough land to support the accumulation of fresh water. At the same time, since none of the other choices follow from what the passage says, and B basically does, we can choose B.
28 Mar 2019, 06:40
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According to the argument given, (1) freshwater is produced when precipitation is accumulated on land and (2) if more than 10% of a planet's total mass is water, there can be no freshwater environment on that planet.
We can establish a connection between the two things mentioned above in only one way 》》If 10% or more of a planet's total mass is water, either no precipitation is possible, or no land (on which the precipitation is to accumulate) rises above water. Option B captures one of these two possibilities.
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We can establish a connection between the two things mentioned above in only one way 》》If 10% or more of a planet's total mass is water, either no precipitation is possible, or no land (on which the precipitation is to accumulate) rises above water. Option B captures one of these two possibilities.
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