Question

The liquid portion of earth is part of the _____, which is made up of earth's oceans, rivers, and lakes.

Answer 1

The Answer is that the liquid portion of the earth is called hydrosphere.
Hydrosphere covers the seventy percent of the earth.
Biosphere is categorized into three parts:
Atmosphere that is air.
Landsphere that is land and hydrosphere that is water. All these are also we can say the properties of earth which makes the earth a place where life can exist.