LIFE SCIENCE

Detailed explanation-1: -Energy changes from one form to another. Therefore it is said as energy flow and not energy cycle. The nutrients are used up or recycled by living beings.

Detailed explanation-2: -Energy flows through an ecosystem, while matter cycles within it.

Detailed explanation-3: -Energy is not recycled in ecosystems and each ecosystem requires a continuous input of energy to sustain it. There is some energy transformed at each level of the food chain or food web in an ecosystem. In an ecosystem, energy is frequently transformed from one form to another.

Detailed explanation-4: -Overview. A food chain is a simple diagram that shows one way energy flows through an ecosystem.

Detailed explanation-5: -The energy flow in an ecosystem is not cyclic because being an energy pyramid, it moves from the producers at the bottom of the pyramid up to a point where it cannot be used by living things anymore. It is either used by the organisms in the ecosystem or it is lost to the atmosphere.