| A | B |
|---|
| environmentalism | Concern for protecting the natural environment, especially from harmful human activity. |
| climate | The average weather for an area over the span of many years. |
| seasons | Repeated natural changes in temperature, precipitation, and the amount of daylight, resulting from the earth's axial tilt and its revolution around the sun. |
| climate zone | An area in the world that has a particular kind of climate based mainly on precipitation and temperature. |
| tropical rainy climate | A climate zone that is both very warm and very wet year round. |
| dry climate | A climate zone that gets little precipitation, or where the amount of evaporation is greater than the precipitation received. |
| temperate marine climate | A climate zone with moderate temperatures and either seasonal or continual moderate precipitation. |
| temperate continental climate | A climate zone that has large temperature swings and moderate amount of precipitation year round. |
| polar climate | climate zone that receives varying amounts of frozen precipitation with consistently cold temperatures. |
| highland climate | A microclimate representing one of the lowland climate ones at some higher elevation on a mountain. |
| global warming | A form of climate change involving a general increase of average global temperatures. |
| El Nino Southern Oscillation (ENSO) | A shift in the pressure systems, winds, and currents in the equatorial and southern Pacific Ocean regions that repeats about every five years. |
| greenhouse hypothesis | Suggestion that human activities over the past two centuries have increased carbon dioxide levels in the atmosphere and have triggered global warming . |
