Question

question 20
which of the following is not likely to occur when a river is polluted by agricultural and industrial runoff?
fish die.
biodiversity increases.
frogs fail to reproduce.
the river’s ecosystem changes.

Explanation:

Pollution from agricultural and industrial runoff is harmful to river ecosystems. It can cause fish to die, disrupt frog reproduction, and change the ecosystem. Biodiversity generally decreases, not increases, due to the negative impacts of pollutants on organisms.

Answer:

B. Biodiversity increases.