| A | B |
|---|
| weather | condition of the atmosphere in one place during a limited period of time |
| climate | weather patterns that an area typically experiences over a long period of time |
| axis | imaginary pole running from the North Pole to the South Pole |
| equinox | day when the day and night hours are the same |
| solstice | days when the sun's ray thouch either the Tropic of Cancer or Capricorn |
| greenhouse effect | effect when the atmostphere traps in heat |
| global warming | general rise in global temperature |
| prevailing winds | global winds that blow in fairly constant patterns |
| coriolis effect | causes prevailing winds to blow diagonally rather than a straight line |
| doldrums | windless bans near the equator |
| El Nino | periodic change in the pattern of ocean currents and water temperatures in the mid-Pacific region |
| rain shadow | causes dry ares to develop on leeward sides of mountain ranges |
| natural vegetation | plant life that grows in an area where the natural environment is unchanged by human activity |
| coniferous | evergreen trees |
| deciduous | trees such as oak, elm, and maple |
| mixed forests | forests with both kinds of trees |
| praries | inland grasslands |
| permafrost | permanatly frozen subsoil |
