Across
- 3. Something built up from once-living things, over a course of millions of years
- 6. Formations of rock
- 7. The process where water dissolves minerals from rocks
- 9. The layer of air that surrounds the Earth
- 10. The surface of the ocean
Down
- 1. The process where energy from the Sun is harvested to to be turned into glucose from carbon dioxide and water
- 2. Microscopic plants
- 4. The process where carbon released from dead phytoplankton builds up on the ocean floor
- 5. The process where minerals and other things are washed into the sea
- 8. The process where decomposers dead plant material,making nutrients in the process for living plants