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Oxygen Cycle

Oxygen Cycle. Page 21. O 2 CO 2. Plants produce O 2 From CO 2 During Photosynthesis. Oxygen is used during combustion and by plants and animals during respiration Which releases energy and produces CO 2. Page 20. Carbon is found in the Atmosphere as carbon dioxide. .

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Oxygen Cycle

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  1. Oxygen Cycle Page 21 O2CO2 Plants produce O2 From CO2 During Photosynthesis Oxygen is used during combustion and by plants and animals during respiration Which releases energy and produces CO2

  2. Page 20 Carbon is found in the Atmosphere as carbon dioxide. It is then turned into Food by photosynthesis Which plants and Animals use for energy. When food is used for Energy it is broken Down And Carbon dioxide is Released into the air Decomposers

  3. Page 19, 21 Most Nitrogen is found in the atmosphere and is useless to most living things Bacteria “fix” nitrogen into Nitrates which plants can use to Make proteins. Nitrogen Cycle There are bacteria That “unfix” the nitrogen, putting it back into the atmosphere

  4. Cycles Evaporates • Water, carbon dioxide, oxygen and nitrogen go through in nature. When water goes into the air as a gas it . People and animals add to the air. Plants add to the air. Plants use to make proteins. Nitrogen is made into nitrates by . Animal ` are made from plant proteins. • 1. • 2. • 3. • DO PART 3 AS A TICKET OUT (Separate piece of paper) Carbon Dioxide Oxygen Nitrates Bacteria Proteins B C A

  5. Ticket Out • What would happen if the cycles of materials (Carbon, water, oxygen, nitrogen) in nature did not repeat themselves?

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