What will happen to the value of 'g' as we go below the surface of the earth?

What will happen to the value of 'g' as we go above the surface of earth?

Does the value of 'g' vary, as we move on the surface of earth?

Is the value of 'g' same everywhere on the surface of earth?

What is the value of 'g' at a height near the surface of earth?

What is the value of 'g' and 'G' at the centre of earth?

Earth also moves in circular orbit around the sun once every year with an orbital radius of 1.5xx10^(11)m . What is the accerelation of the earth ( or any object on the surface of the earth) towards the centre of the sun? How does this acceleration compare with g = 9.8 m//s^(2) ?

The value of g at the centre of the earth is