Technology And It's Effects

Hi , we have been learning about technology and it's its effects so I wrote a little paragraphe about this subject and I wish if hope you can correct it :
Technology became has become very necessary in our lives . The problem is that it's not always safe . Technology is like fire , it's a good servent servant and a bad master . We masn't musn't let it controul control our lives . Unfortunatelly , most of people didn't don't recognise that this . They can't see that they're becoming addicted , and that they can not leave without peaces of technology any more . Besides to addiction , many diseases have appeared because of it as a result; for example , phones cause cancer . technology is not only effecting affecting us but even the earth as well . Cars and factories are polluting the air . Globalwarming and the disappearance of many spaces natural habitats of for animals or and plants are due to it technology. Moreover , it can be immoral ; like clonning . This is unacceptable at all (You can say 'This is completely unacceptable,' or 'This isn't acceptable at all.'). However , technology is only bad when we don't know how to use it correctly . It's a very important thing but must full musn't fall in the wrong hands .

Feel free to ask if you have questions on any of my corrections.