Birds excrete and they are _ animals.

Uric acid, oviparous

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Uric acid, viviparous

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Urea, oviparous

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Ammonia, oviparous

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Solution

The correct option is D Uric acid, oviparous
Some land animals like birds, lizards, snakes excrete a semi-solid, white-coloured compound called uric acid. Birds are oviparous animals as they produce eggs that hatch after leaving the mother's body. Viviparous are those animals that give birth to young ones directly without laying eggs.
Hence, the correct answer is option A.

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Birds excrete ________ and they are _________ animals.

Birds excrete and they are _ animals.