| A | B |
|---|
| adaptation | any structure or behavioral feature that helps an organism survive in its environment |
| climate | the pattern of weather in a region |
| El Nino | a climate event that starts in the tropical Pacific Ocean and sets off changes in the atmosphere |
| temperate zones | areas between tropics and polar zones - Indiana is an example |
| seasons | a short-term periods of climate change caused by variations in daylight, temperature, and weather patterns |
| hibernation | a period of reduced activity that some mammals undergo in the winter |
| polar zones | the region that extends from the poles to 66 1/2 degrees north and south latitudes |
| greenhouse effect | natural heating process of Earth caused by gases tropping heat in the atmosphere |
| global warming | rise in the average global surface temperature |
| tropics | the region that receives the most solar radiation because the sun shines almost directly overhead |
| deforestation | destroying and cutting down of trees |
