for right answer Penguins come to nest in colonies inland on the ground, in rock crevices, or burrows, but the nesting sites get very crowded. If a pair does not find room to nest, they might not be able to raise their offspring. What is the limiting factor?

availability of nesting sites is the limiting factor (because the crowding is preventing the pair from reproducing)

Explanation:

The nesting ground

Explanation:

Penguins that cannot find a nest, cannot reproduce and make eggs. Though many penguins rely on their colonies to keep them safe from severe weather, and stick together, they also rely on their eggs. Penguins are known to have 100,000 in one colony so it would probably be alot of trouble for a pair to find a place to hatch their eggs.

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