LIFE SCIENCE

Detailed explanation-1: -All of the interconnected and overlapping food chains in an ecosystem make up a food web. Organisms in food chains are grouped into categories called trophic levels. Roughly speaking, these levels are divided into producers (first trophic level), consumers (second, third, and fourth trophic levels), and decomposers.

Detailed explanation-2: -Each living thing is a part of multiple food chains – for example, grass is a part of the food chain: grass → grasshopper → frog → snake → eagle, and also of the food chain: grass → deer → tiger. All of the interconnected and overlapping food chains in a habitat make up a food web.

Detailed explanation-3: -A food web is a diagram of feeding relationships that includes multiple intersecting food chains. Energy is passed up the food chain from one trophic level to the next but a lot of it is lost along the way. There is less biomass at the top of the food chain than there is at the bottom.