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Living Environment Regents Review Practice Human Impact On the Environment Question 6 PDF Print E-mail
Sunday, 28 June 2009 11:34

Toxic chemicals called PCBs, produced as a result of manufacturing processes, were dumped into the Hudson River. What was most likely a result of this action on fish in the Hudson River?

A) Some fish became unfit to eat.

B) The fish populations increased.

C) The carrying capacity for fish increased in the river. 

D) Thermal pollution of the river increased, decreasing the fish population.

Correct Answer: Option A - Some fish became unfit to eat.

PCBs (polychlorinated biphenyls) are a colorless, odorless oils found in the sediments of the river. The fishes consume these chemicals which in turn affect the immune system of the body and the brain

Incorrect Options

Since PCBs are toxic substances, there is no way that the population of the fishes will increase. Hence the other options are also incorrect.

Last Updated on Thursday, 02 July 2009 07:23

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