- Contains one carbon atom and one oxygen atom

- Is a colorless, odorless, poisonous gas

- Is produced by the incomplete combustion of fuels, such as wood, gas, oil, and coal

- Can cause headaches, dizziness, nausea, vomiting, and death if inhaled in high concentrations

- Binds to hemoglobin in the blood, preventing oxygen from being transported to cells

- Is a major component of tobacco smoke

Carbon Dioxide (CO2)

- Contains one carbon atom and two oxygen atoms

- Is a colorless, odorless, non-poisonous gas

- Is produced by cellular respiration, the process by which cells convert glucose into energy

- Is also produced by the combustion of fuels, such as wood, gas, oil, and coal

- Is an important greenhouse gas, meaning that it traps heat in the atmosphere

- Is required by plants for photosynthesis, the process by which plants convert sunlight into food

- Is a byproduct of alcoholic fermentation