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1st Characteristic of LifeCell & Organization
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2nd Characteristic of LifeEnergy use and metabolism
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3rd Characteristic of LifeResponse to environmental changes
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4th Characteristic of LifeRegulation and homeostasis
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5th Characteristic of LifeGrowth and development
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6th Characteristic of LifeReproduction
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7th Characteristic of LifeBiological evolution
