Explain the factors that influence the type of nitrogenous waste excreted by animals.

Explain the factors that influence the type of nitrogenous waste excreted by animals.

They type of excretory product produced by an animal depends of it metabolic activities to produce it.

However, through evolution;

• animals living in fresh water with high access to water produce more soluble and more toxic nitrogenous wastes such as ammonia to get rid of excess water.

• animals with less access to water of that live in arid environment produce less soluble and less toxic nitrogenous wastes such as urea and uric acid to conserve water

• Fresh water organisms with big surface area to volume ratio excrete nitrogenous wastes that are more soluble in water and therefore can easily diffuse out through the body surface. For example, amoeba and other unicellular animals excrete ammonia.

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