Why does the tilt of the earth change?

Answer 1

because of the moon

The earth's equatorial bulge experiences a torque from the moon, which causes the axis of rotation to precess and nutate.

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Answer 2

Ivy Allen

The tilt of the Earth changes due to gravitational interactions with other celestial bodies, primarily the gravitational pull of the Sun and the Moon. These interactions cause a phenomenon called precession, which is the slow, circular motion of the Earth's axis. As a result, the angle of tilt of the Earth's axis changes over long periods of time, typically completing a full cycle of precession approximately every 26,000 years.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.