AP BIOLOGY

Detailed explanation-1: -Omnivores such as humans eat plants and animals from all levels, but a food chain that includes humans has a producer, a primary consumer and humans. Humans are said to be at the top of the food chain because they eat plants and animals of all kinds but are not eaten consistently by any animals.

Detailed explanation-2: -Humans play prominent roles in trophic cascades, suppressing predator populations by hunting and fishing and introducing predators to new places. When human changes increase grazing pressure, the effects cascade to the plant community and alter biogeochemical cycling (49).

Detailed explanation-3: -Humans are regarded to be at the top of the food chain therefore they eat a wide range of plants and animals but are not constantly devoured by any creatures. Human consumes plants called fruits and vegetables, and they are the principal consumers of these plants.

Detailed explanation-4: -A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem.