How does recycling runoff reduce agricultural pollution?

Agricultural runoff can be described as the waste such as fertilizers, pesticides, herbicides, soil waste etc which gets drained off into rivers with water. Agricultural runoff might occur due to irrigation, abundant rain etc.

If the agricultural run-off is recycled, then water will be less polluted. The water will therefore be not harmful for usage by the plants. The run-off can be diagnosed and essential minerals required by the plants can be recycled.

The recycling of the agricultural run off will make the drained water less contaminated for the animals living in the lakes or ponds.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.