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BARE NECESSITIES OF LIFE

BARE NECESSITIES OF LIFE. 1. Food. Food provides: Energy Raw materials to build and repair cells and to carry out life processes. Different ways of obtaining food. Producers – use energy from sun, water and carbon dioxide to make food Consumers – eat other organisms to get food

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BARE NECESSITIES OF LIFE

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  1. BARE NECESSITIES OF LIFE

  2. 1. Food • Food provides: • Energy • Raw materials to build and repair cells and to carry out life processes

  3. Different ways of obtaining food • Producers – use energy from sun, water and carbon dioxide to make food • Consumers – eat other organisms to get food • Decomposers – break down nutrients in dead organisms to get food

  4. 2. Water • 70% of cells is made of water • Chemical reactions that keep organisms alive need to occur in water • A humancan survive 3 days without water

  5. 3. Air • Plants need carbon dioxide to make food in photosynthesis • Plants & animals need oxygen for cellular respiration to release energy from food

  6. 4. Place to live • All organisms need a place to live that has all the things they need to survive

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