Comparing Hypotheses on Fish Population Decline

In a series of studies examining the effects of pollutants on fish populations, two marine biologists, Dr. Ocean and Dr. River, have proposed different hypotheses.

Hypothesis 1: Dr. Ocean posits that the presence of heavy metals in the water significantly reduces fish reproduction rates, leading to a decline in certain fish populations.

Hypothesis 2: Dr. River argues that organic pollutants, such as fertilizers and pesticides, are the primary cause of decreased fish populations, affecting their growth and health more than heavy metals.

As a result of their studies, both scientists have reported varied findings regarding the reproductive success and health of fish in affected habitats.