Carbon Dioxide
CO2
Carbon Dioxide and Animals
All animals use oxygen and give off Carbon Dioxide. Dead animals continue to use oxygen and give off carbon dioxide as they rot and decay
Carbon Dioxide and Plants
During daylight all plants use carbon dioxide and give off oxygen. This process is called photosynthesis - it requires light. All dead plants will use up a lot of oxygen and give off a lot of carbon dioxide as they rot and decay.
Where can Carbon Dioxide be found?
Carbon Dioxide is a form of Carbon in Earth's atmosphere. About 0.03 of our air is Carbon Dioxide.