Across
- 2. Process performed by microorganisms and fungi in order to reduce the remains of dead animals and plants and turn them into useful minerals
- 3. Process carried out by bacteria in the soil which turn ammoium (NH4) into nitrates (NO3)
- 6. Process performed by producers when they combine carbon dioxide, water and solar energy in order to produce sugar
- 7. Process carried out by bacteria that decompose nitrate that was not used by plants back into nitrogen gas that is released to the air
- 8. Chemical substance formed by carbon C, hydrogen H, and oxygen O that is formed by plants in photosynthesys
- 12. Process carried out by animals and human beings when they release gaseous carbon dioxide into the atmosphere
- 15. Process performed when humans burn out fossil fuels in order to obtain energy to move machines in factories and cars
Down
- 1. Process of absorption of nitrates performed by the roots of plants in the soil
- 4. Process carried out by bacteria in the soil that turns ammonia (NH3) into ammonium (NH4)
- 5. Process carried out by animals when they get glucose by eating plants or other animals
- 9. Process that happens in the ocean when high acidic concentration in the water affects coral reefs by dissolving the carbonate that they contain
- 10. Chemical element that is present in less than the 1% in the atmosphere and is the main component of life
- 11. Chemical element that is concentrated in a 79% in the atmosphere and is used by plants to grow
- 13. Thick oil that forms underground and results of the slow decomposition of animal tissue that is rich in carbon
- 14. Chemical substance that is prefered by plants as their favorite food source that they need to take in order to grow