Luciana's CrossWord Puzzle

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Across
  1. 2. which sphere of the atmosphere do you often see a plane flying in the sky?
  2. 5. which body system brings you oxygen into the body and expels carbon dioxide.
  3. 7. what are formed when water vapor condenses.
  4. 9. which system breaks down food into energy.
  5. 10. the atmosphere, the ground, and the bodies of water are all heated by the suns energy. how does this energy reach earth.
  6. 12. what does DNA stand for.
  7. 13. what stores energy kinetic or potential energy.
  8. 15. skeletal which body system helps you move, gives your body shape, and makes new blood.
Down
  1. 1. uncontrolled fires that burns down trees and grass.
  2. 3. are what winds swirl around a center of an "eye" and are bigger then tornados.
  3. 4. what transfer of heat does a lava lamp have.
  4. 6. anything that can casein illness.
  5. 8. most basic unit structure of all living things.
  6. 11. how many climate zones are there.
  7. 14. how many cells theories are there.