- **Biosphere:** Rich biosphere with diverse ecosystems supporting a wide variety of life forms.

- **Hydrosphere:** Abundant water covering about 71% of the surface; includes oceans, rivers, lakes, and ice caps.
- **Geosphere:** Composed of a solid inner core, liquid outer core, mantle, and crust; features mountains, valleys, and tectonic activity.
- **Atmosphere:** Nitrogen (78%) and oxygen (21%) dominate; protects life, regulates temperature, and supports weather patterns.

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  • Biosphere: Rich biosphere with diverse ecosystems supporting a wide variety of life forms.
  • Hydrosphere: Abundant water covering about 71% of the surface; includes oceans, rivers, lakes, and ice caps.
  • Geosphere: Composed of a solid inner core, liquid outer core, mantle, and crust; features mountains, valleys, and tectonic activity.
  • Atmosphere: Nitrogen (78%) and oxygen (21%) dominate; protects life, regulates temperature, and supports weather patterns.