Which of the following is not an example of a biomass energy source? (1) Wood (2) Ethanol (3) Cow dung (4) Atomic energy

Which of the following is not an example of a biomass energy source? (1) Wood (2) Ethanol (3) Cow dung (4) Atomic energy
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(4) Atomic energy Explanation: The organic matter within the plants, the agriculture crops, and material related with the plants directly or in directly are called as the biomass.
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