The carbon footprint of a product, service or event is the total amount of carbon dioxide and other greenhouse gases that are emitted over its full life cycle
Describe how carbon dioxide helps to maintain temperatures on Earth
Carbon dioxide allowers short wavelengthradiation to pass through the atmosphere to the Earth's surface; carbon dioxide absorbsoutgoinglong wavelength radiation
Explain how the amount of oxygen in the air increased to the amount found today
Algae evolved and started producing oxygen via photosynthesis; land plants evolved to increase amounts of oxygen in the atmosphere further
