Carbon dioxide (CO2) is a colorless gas produced by burning fossil fuels such as coal, oil, and natural gas. It is one of the primary greenhouse gases responsible for global warming.
Non-renewable energy sources formed from the remains of ancient plants and animals, which release carbon dioxide when burned.
The process by which green plants use sunlight to convert carbon dioxide and water into glucose (sugar) and oxygen.
The ongoing decrease in pH levels of Earth's oceans due to the absorption of excess carbon dioxide, causing harm to marine life.