Question

What do you mean by the four realms of the earth

Answer 1

The realm of land is called lithosphere, the realm of water is called hydrosphere and the realm of air is called atmosphere.The narrow zone where land, water and air meet is called biosphere.
So it is four

Answer 2

нιι мaтe __

нere'ѕ yoυr anѕwer,
.
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§ The four realms of the earth are:
i. Lithosphere - the solid portion of earth
ii. Hydrosphere - all the water bodies on earth
iii. Atmosphere - the blanket of air around us
iv. Biosphere - the living world
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нope ιт нelpѕ