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What is energy flow? Mention the characteristics of Energy.

Answer
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Hint: The flow of energy in the biological system is one of the primary factors that contribute to the survival of a particularly large number of living beings. Sun-based energy is the primary source of energy for nearly all creatures on Earth.

Complete answer:
The energy flow is a measure of how much energy moves up and down the natural pecking order. This energy flow is the calorific flow. The flow of energy in the environment is essential for maintaining natural equilibrium. Food is integrated by the interaction of photosynthesis. In the plants there is a part of the energy stored. The plants use the leftover energy to help them grow and progress. When the makers feed on the stored energy, it is transferred to the essential buyers. This energy is also given to auxiliary shoppers when they feed on the primary customers, and so on.
(1) The energy is transferred from one structure to the next. During photosynthesis, green plants trap the Sun's energy and convert it into 'compound energy of food.
(2) In a natural pecking order, energy is constantly moved from one trophic level to the next higher trophic level.
(3) Energy is used by different creatures at each trophic level for various metabolic activities such as breathing and growth.
(4) Some of the energy remains unutilized at each trophic level and is lost to the climate as warmth. The total amount of energy that remains unutilized at all trophic levels and is lost as warmth at each trophic level is staggering.
(5) In the natural way of life, energy is lost at each trophic level. The exchange of energy in a natural way of life follows the $10\%$ law, which states that "the energy accessible at each progressive trophic level is $10\%$ of the previous trophic level."

Note:
The energy flow occurs as a result of the natural pecking order and food web. Plants, as the producers, assimilate daylight with the assistance of chloroplasts, and a portion of it is converted into compound energy during the time spent photosynthesis.