
Like using cellular phones, this gadgets have advantages and disadvantages. Phones marked the progress in our country because we are no longer using telephones or writing letters to communicate to other people. Instead we are now using any desired phones because it is the easiest way to send a message (the receiver receives the message just a couple of seconds) or you may call this person anytime. That we should be aware that cellphones have radiation that may cause cancer.
So as early as today, we should be vigilant in using this technologies.I learned that science and technology have advantages and disadvantages depending on its usage. All things have limitations. If we go beyond to this limitation we don't know its consequences.
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