Which of the following would be the best way for an ecologist to determine the effects of an industrial waste chemical on the survival of a fish species?

Answer choices are:

a. Conducting experimental work in a lab

b. Conducting library research

c. Constructing mathematical models on a computer

d. Observing the effect of increasing the amount of chemical in nature

D) Observing the effect of increasing the amount of chemical in nature

Explanation:

Resolution of infection into our natural habitat has concurrently managed to uncertainty, confusion, injury or pain to both the physical ways and living animals occupying the ecosystem. Maybe dangerous substances such as pesticides, heavy metals, paper mill waste, polychlorinated biphenyl and thick oil are usually discharged into the marine ecosystem.

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