Answer:
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Explanation:
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The ancestors of birds were most likely arboreal.
<span>Having gliding surfaces is advantageous in arboreal animals because it means less likelihood of dying due to a fall. You'll notice that plenty of arboreal animals today have gliding surfaces. </span>
<span>In the ancestors of birds, the gliding surface just happened to stretch from the "fingers" down to the body, setting up for control of the glide, and for further refinement with elongation of the fingers and arms. With this, the animals were not just saving their lives when falling, they could glide from one tree to another to look for food. </span>
<span>A similar process likely happened in the ancestors of bats. </span>
<span>Don't ask me about pterosaurs or insects, 'cause I don't know.</span>
Reduces water loss compared to other nitrogenous wastes but requires more metabolic energy to produce
Mammals excretes urea as the primary nitrogenous waste product. On the other hand birds, and reptiles excretes uric acid as the primary nitrogenous product. They are called uricothelics because they can convert ammonia to uric acid. Uric acid is a compound similar to purines. This is produced through a complex metabolic pathway thay cost high energy. However it has advantages such as reducing water loss.
