Problem: A nuclear power plant is built next to a river which has always had a large, healthy fish population. After the plant has been operational for a few years, biologists discover that the fish population is almost gone; many have left the area and those that remain are barely breeding anymore. Testing of the river water shows that it has no toxic chemicals in it. Testing of the air and river water show that their levels of radioactivity are the same as before the reactor was built. What could be happening to the fish? Need Assignment Help? Question Select one: a. The plant experienced a meltdown without anyone noticing, releasing radiation that killed the fish b. The reactor burns uranium using oxygen extracted from the river water, so the river doesn't have enough oxygen left to sustain the fish c. Carbon emissions from the plant have gotten into the river water, forming carbonic acid and lowering the pH d. The reactor is cooled using river water, and the river's temperature has become too high