Ecosystems

2. the regions lying between and near these parallels of latitude;the Torrid Zone and neighboring regions
4. an odorless gas
6. a transparent,tasteless liquid
9. weather
11. the measure of warmth and cold
14. another word for warmth
15. of or pertaining to the north or south pole
17. any of the five great divisions of earth
19. moderate or self restrained

1. the line in which a rotating body,such as the earth turns
3. a typical amount,rate,degree,etc
5. a huge gaseous envelope surrounding the earth, and air
6. seasons
7. what we live on
8. A small shed made of glass that contains plants
10. a typical amount,rate,degree, etc
12. something that is produced by an agency or cause; result; consequence
13. to gain more power from everyday foods
16. the space within two lines or three or more planes diverging from acommon point,or within two planes diverging from a common line.
18. the angular distance north or south from the equator of a point on the earth's surface