Question

the earth is not a perfect sphere -give reson

Answer 1

Answer:

it's because it is flattened at the poles

Answer 2

Even though our planet is a sphere, it is not a perfect sphere. Because of the force caused when Earth rotates, the North and South Poles are slightly flat. Earth's rotation, wobbly motion and other forces are making the planet change shape very slowly, but it is still round.

And also, some places on the earth are as high as 8848 feet and the depth below the ocean is very much.

To be perfect sphere, the elevation mush be 0 at all places. But, on the earth the elevation varies at different places.

So, it is not a sphere.