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2014-06-28T20:13:48+08:00

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Yes. Example is your cellphone. It's positive effect is you can use it to communicate others. The negative effect is, if you use it too much, you might get health problems.
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2014-06-28T22:46:14+08:00

This Is a Certified Answer

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Yes, all things in this world have negative and positive effects.
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