Question

What is geoid?and hydrosphere a proper defination please

Answer 1

Hey dude your answer is

The geoid is the shape that the ocean surface would take under the influence of the gravity and rotation of Earth alone, if other influences such as winds and tides were absent.

and

Hydrosphere refers to all the water in our ecosphere, including oceans, land water masses (glaciers, lakes, rivers, and underground), and moisture in soils, biota, and the air (i.e. all water molecules on, under, and over the surface of our planet)

Hope it's help

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