Question

what are the similarities that you find between the surface of the Earth and the bottom of the sea

Answer 1

1. plants grow on surface of earth and bottom of the sea

oil well is also dig on surface of the earth and even  at bottom of the sea

Answer 2

Earth gravity usually consider at same bottom of ocean and it is must be that mass is equal to the more water.

It takes place at the bottom of the ocean and increase between the surfaces of earth.

This could vary throughout the ocean and the water at the bottom of the ocean. It should calculate the density differences and taken between the surface water in tropic level.