How does 'huddling' help penguins?

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Solution

Huddling helps penguins to keep themselves warm.

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Penguins huddling: To withstand the harsh weather of the Antarctic, emperor penguins huddle in groups. Assume that a penguin is a circular cylinder with a top surface area a =0.26 $m^{2}$ and height h = 90 cm. Let $P_{r}$ be the rate at which an individual penguin radiates energy to the environment (through the top and the sides); thus $N P_{r}$ is the rate at which N identical, well-separated penguins radiate. If the penguins huddle closely to form a huddled cylinder with top surface area Na and height h, the cylinder radiates at the rate $P_{h}$ . If N = 1000, by what percentage does huddling reduce the total radiation loss?

Q. Question 6
Which of the following statement is incorrect for penguins?

(a) They huddle together
(b) They cannot swim
(c) They have webbed feet
(d) They have streamlined body

Q. Penguins swim with the help of fins.

Q. Which of these adaptations in penguins help them swim?

Q. Ducks and penguins have webbed feet that help them to ______.

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