The process by which non-biodegradable pollutants become more concentrated near the top of a food chain is called

Bioaccumulation is the process in which there is increase in the concentration of pollutants in an organism at the top of a food chain. Bioaccumulation occurs when non-biodegradable pollutants such as chemical enter into an organism and the organism is unable to break down or excrete the chemical. The chemical then continues to accumulate until it eventually becomes deadly to the living organism.

a time line cause it goes from 685 to 978

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.