Why is the kidney an evolutionary advancement for land animals?
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The kidney was an evolutionary advancement for land animalsbecause it helped them conserve the water that they needed while getting rid of waste that could kill them from within.
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Kidneys are bean-like structures present in the lower part of the abdomen. The evolution of kidneys has helped the mammals to adapt to earth life better as they expel feces out of the bodies.
These are also necessary to filter ammonia out of the bodies. Apart from filtering ammonia out, these also help to regulate water composition in blood, ph level, and ions concentration.
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