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Bacteria are alive as: 1-they have tails and they move about here and there.

2-They have an ability to reproduce them selves.

3-They multiply very fast______ a single bacterium breaks itself into two every half hour.

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12y ago
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12y ago

They consume food, they produce waste, they reproduce, and some are motile.

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Q: How you do know that bacteria are alive?
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