Our Environment | Flow Of Energy | CBSE Class 10 Science | Biology

Our Environment | Flow Of Energy | CBSE Class 10 Science Biology

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Hello student, here in this video we are going to study a very important topic named, Flow of energy from chapter Our Environment of CBSE Class 10 Science.

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Our Environment:

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A food chain shows a direct transfer of energy between organisms. As every organism can feed on multiple things, a food web is a much more realistic and simplified method of transferring energy in an ecosystem.

Energy flow
Energy flow is always unidirectional. Energy flows progressively from one trophic level to another and cannot revert back.
In most of the natural ecosystems, energy comes from the sun, it is trapped by producers and then pass on to successive trophic levels in the form of food.
The available energy decreases at a higher trophic level.
Out of the total energy available at a particular trophic level, only 10% is passed on to the next trophic level, making it impossible for energy to flow in the reverse direction.
The flow of energy in an ecosystem occurs in the following sequence:
Sun - Producer - Herbivore - Carnivore - Decomposer

What is Food Web?
There are unique interactions and relationships which are involved in the transportation of energy. The energy, once produced and captured, is distributed throughout the various living organisms. This transfer of energy is termed as the food web.

Trophic level
The producers and consumers in the ecosystem can be arranged into different feeding groups and are known as trophic levels or the feeding level.

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