Across
- 4. Functioning together of plants, animals and other creatures.
- 6. A colourless and odourless layer of gases surrounding the Earth.
- 7. The layer of Earth which is thicker than the crust but thinner than the core.
- 8. All natural resources of the Earth are found here.
Down
- 1. This sphere includes parts of lithosphere, atmosphere and hydrosphere
- 2. Part of the Earth covered with water
- 3. The most important gas.
- 5. Fish and other ___________ life provide us with food.