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NEEDS OF LIVING THINGS

NEEDS OF LIVING THINGS. Four Basic Needs. Living things must satisfy their basic needs for energy, water, living space, and stable internal conditions. ENERGY. Food is an organism’s energy source Autotroph/producer = make their own food Auto = self troph = feeder

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NEEDS OF LIVING THINGS

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  1. NEEDS OF LIVING THINGS

  2. Four Basic Needs • Living things must satisfy their basic needs for energy, water, living space, and stable internal conditions.

  3. ENERGY • Food is an organism’s energy source • Autotroph/producer = make their own food • Auto = self troph = feeder • Heterotrophs/consumers = cannot make their own food. • Hetero = other

  4. WATER • Must have H2O to survive • Dissolves more chemicals than any other substance on Earth • 92% of blood is water • Organisms will survive only a few days without H2O

  5. LIVING SPACE • All organisms need a place to live, obtain food and H2O, and find shelter • Space on Earth is limited so organisms must compete

  6. STABLE INTERNAL CONDITIONS • Organisms must keep conditions inside their body stable despite environmental changes

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