"react why does useeffect run twice"

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1. react useeffect run once ••• /mo •••
2. react useeffect called twice ••• /mo •••
3. react useeffect triggered twice ••• /mo •••
4. why does useeffect run twice ••• /mo •••
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9. can we use two useeffect in react ••• /mo •••
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11. can we use multiple useeffect in react ••• /mo •••
12. react useeffect being called multiple times ••• /mo •••

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