respiration,excretion in animals
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Excretion in Animals, Humans and Plants!
Chemical reactions occur in the cells of living organisms all the time to carry out the life processes.
The sum of these reactions is called metabolism. Metabolism produces useful products as well as toxic (poisonous) by-products.
These toxic substances have to be removed as they are harmful if allowed to accumulate. The removal of metabolic waste products from the body of an organism is known as excretion.
Chemical reactions occur in the cells of living organisms all the time to carry out the life processes.
The sum of these reactions is called metabolism. Metabolism produces useful products as well as toxic (poisonous) by-products.
These toxic substances have to be removed as they are harmful if allowed to accumulate. The removal of metabolic waste products from the body of an organism is known as excretion.
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