greenhouse effect

2. Renewable fuels derived from biological materials
4. The gas that accounts for about 84 percent of total U.S. greenhouse gas emissions.
6. The part of the Earth's atmosphere that absorbs almost all of the sun's harmful ultraviolet light.
7. The specific condition of the atmosphere at a particular place and time. It is measured in terms of such things as wind, temperature, humidity, atmospheric pressure, cloudiness, and precipitation.
10. The way carbon dioxide is measured.
11. A Gas that represents about 8 percent of total U.S. gas emissions. The largest sources are wood burning in stoves and fireplaces, livestock digestive systems, and decomposition in landfills.

1. The energy harnessed from the sun, which can then be transformed into different types of energy, including thermal and electric.
3. The electromagnetic radiation emitted by the sun.
5. Type of radiant energy that's invisible to human eyes but that we can feel as heat.
8. long-term average of weather typically averaged over a period of 30 years.
9. pollution air quality with negative effects on human health and the environment due to the introduction of gases into the atmosphere which has a harmful effect.