1. Carbon footprint is the amount of greenhouse gas, such as carbon dioxide, released into the atmosphere as a result of human activities such as open burning and burning of fossil fuels.

2. Global warming happens due to excess greenhouse gases trapped in the Earth's atmosphere.

3. Global warming can lead to climate change

4. Managing global warming and climate change

• Use green transportation
• Practive saving water and fuels
• Build green building
• Use bioenergy
• Reuse, reduce and recycle materials