Across
- 3. A member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus, allows decomposition to happen; releases CO2.
- 4. The process of burning fossil fuels; releases CO2.
- 6. Carbon Dioxide formula
- 7. The envelope of gases surrounding the Earth or another planet, CO2 is here and is needed for photosynthesis.
- 11. The process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
- 12. A natural fuel such as coal or gas, formed in the geological past from the the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
Down
- 1. Carbon present in the atmosphere is absorbed by plants for photosynthesis.
- 2. During this process plants absorb carbon dioxide and sunlight to create fuel (glucose and other sugars).
- 5. A simple sugar which is an important energy source in living organisms and is a component of many carbohydrates; Product of photosynthesis.
- 7. A living organism that feeds on organic matter; its waste will give off CO2.
- 8. The state or process of rotting; decay; needs bacteria in order for the process to work, releases CO2 to the atmosphere.
- 9. A living organism of the kind of exemplified by trees, shrubs, herbs, grasses, ferns, and mosses; goes through cell respiration and photosynthesis; produces oxygen.
- 10. The major pathway for removal of organic carbon from the atmosphere, affecting both atmospheric and landscape processes; makes glucose.