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NEEDS OF LIVING THINGS
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Four Basic Needs Living things must satisfy their basic needs for energy, water, living space, and stable internal conditions.
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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
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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
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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
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STABLE INTERNAL CONDITIONS
Organisms must keep conditions inside their body stable despite environmental changes
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