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Cycles of matter. Section 4.4 . Matter and your body. About 96% of your body is made up of only four elements: Oxygen, Carbon, Hydrogen, and Nitrogen. Organisms cannot always use common elements on earth, Nitrogen is 78% of the atmosphere, but not in a form plants can use.

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cycles of matter

Cycles of matter

Section 4.4

matter and your body
Matter and your body
  • About 96% of your body is made up of only four elements: Oxygen, Carbon, Hydrogen, and Nitrogen.
  • Organisms cannot always use common elements on earth, Nitrogen is 78% of the atmosphere, but not in a form plants can use.
  • Unlike energy, matter moves within cycles.
the water cycle
The Water Cycle
  • Water moves between the ocean, the atmosphere, and the land. Living things also take part in this cycle.
  • Water moves into the atmosphere through Evaporation (the movement of water into the atmosphere as it goes from liquid to gas)
  • Water can also enter the atmosphere through transpiration (evaporation of water through plant leaves)
water cycle continued
Water Cycle continued
  • As water vapor cools, clouds are formed.
  • A water molecule may remain in the atmosphere for about two weeks
  • It returns to the surface through precipitation: rain, snow, sleet, and hail
water cycle continued continued
Water cycle continued continued
  • Some rain soaks into the ground and becomes groundwater
  • It enters plants through the roots, and then atmosphere through the leaves
  • It can take a water molecule that falls on land 4000 years to complete the cycle
videos
videos
  • http://www.youtube.com/watch?v=hehXEYkDq_Y