| A | B |
|---|
| climate | weather patterns over a long time |
| humidity | wet |
| greenhouse gases | CO2, methane and water vapor |
| carbon footprint | how much CO2 and greenhouse gases you make |
| climate footprint | another name for carbon footprint |
| acid rain | a rain that is acidic. It harms plans and animals. |
| global warming | average temperature increase of Earth since the 20th century and its projected continuation |
| sustainability | capacity to endure, to last. |
| ecosystem | all the organisms in a given area,with the nonliving factors (air, water, sunlight) with which they interact |
| solar panel | It makes electricity from the sunlight. |
| solar energy | Energy from the sun. |
| the U. S. and China | They have the 2 largest climate footprints. |
