Which of the following best explains why the polar regions are colder than the e

Question

Which of the following best explains why the polar regions are colder than the equatorial regions of the Earth? Select one: The equator has a thick layer of greenhouse gas that helps trap warm sunlight. Sunlight comes in directly overhead in equatorial regions and is focused on a smaller area, so more energy is converted to heat at these locations. The poles are cold because they have thinner atmospheres with little greenhouse gas to keep them warm. Insolation at the poles is more intense than at the equator.

Explanation / Answer

B

Solar radiation strikes the earth perpendicularly at the equator so it receives more insolation where as at poles solar radiation arrives at an oblique angle. so solar radiation at poles has to cover large areas leading to less intensity

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