जॉइन Examsbookउत्तर :
The four main systems of the earth are5
प्र: The four main systems of the earth are
- उत्तर देखें
- Workspace
उत्तर :
व्याख्या :
The Earth has four major systems or spheres. These systems are 1. The geosphere, 2. The hydrosphere, 3. The atmosphere, and 4. The biosphere. The biosphere is the system where we belong.