Rocks sand soil , Giosphere : It is the system that includes rocks, soil, sand, air , mixture of gases , Atmosphere: system that surrounds Earth and it is mixture of gases( nitrogen, oxygen, carbon dioxide, water vapor), animals plants microorganisms , Biosphere:system includes all living organisms humans, plants, animals, microorganisms, water salt or fresh , Hydrosphere: system includes all water on Earth (fresh water and salt water)..

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