EVERYDAY 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: -A(n) food chain is a model that shows how energy flows in an ecosystem through feeding relationships. 1. When you overlap the food chains in an ecosystem, the result is a(n) food web.

Detailed explanation-3: -Normally, food webs consist of a number of food chains meshed together. Each food chain is a descriptive diagram including a series of arrows, each pointing from one species to another, representing the flow of food energy from one feeding group of organisms to another.

Detailed explanation-4: -The different feeding positions in a food chain or web are called trophic levels. The first trophic level consists of producers, the second of primary consumers, the third of secondary consumers, and so on. There usually are no more than four or five trophic levels in a food chain or web.

Detailed explanation-5: -Each level in the food chain is called a trophic level. The different trophic levels are Primary producers, primary consumers, secondary consumers, tertiary consumers and quaternary consumers. When dead organic matter becomes the starting of a food chain, then it is called the detritus food chain (DFC).