Food webs demostrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups relate with the ecosystem. The atoms that compose the organisms in an ecosystem are cycled frequently between the living and nonliving parts of the ecosystem. The energy flow shows the energy transmission from one trophic level to next trophic level in the food chain.
Living things need nonliving matter and energy. Matter is recycled in ecosystem. Decomposers discharges nutrients when they break down dead organisms. Nutrients are absorbed by plants through their roots.
A food chain is a cycle of organisms through which nutrients and energy pass as one organisms eats another which are used to describe the ecosystem structure and dynamics. Energy flow through an ecosystem while matter cycles within it. Energy enters an ecosystem when producers perform phothosynthesis, getting energy from the sun and keeping it as chemical potential energy.
