The calm, shallow waters of coastal estuaries are easily polluted by nutrient-rich sewage. When estuary waters become overnutrified as a result, algae proliferate. The abundant algae, in turn, sometimes provide a rich food source for microorganisms that are toxic to fish, thereby killing most of the fish in the estuary.
Which one of the following can be properly inferred from the information above?
(A) Fish in an estuary that has been polluted by sewage are generally more likely to die from pollution
than are fish in an estuary that has been polluted in some other way. - WRONG. No such compared can be inferred.
(B) In estuary waters that contain abundant algae,
microorganisms that are toxic to fish
reproduce more quickly than other types of microorganisms. - WRONG. Reproduction not discussed.
(C) Nutrients and other components of sewage
do not harm fish in coastal estuaries
in any way other than through the resulting proliferation of toxic microorganisms. - WRONG. No such possibilities are discussed or suggested in the passage.
(D)
Algae will not proliferate in coastal estuaries that are
not polluted by nutrient-rich sewage. - WRONG. Either of the red text can be either true or false.
(E)
Overnutrifying estuary waters by sewage can
result in the
death of most of the fish in the estuary. - CORRECT.
This is as easy as it can get. However, E just reiterates the passage - it's not even a rephrase.
Answer E.
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Pain + Reflection = Progress | Ray Dalio
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