I would say even though you are only a teenager all aspects of globalization still have an impact on your life. As mentioned by someone else terrorism has had an adverse effect on some of our freedoms. We are no longer able to move about as freely as we were pre 9/11.
Everything you buy is impacted by globalization. Who can make products the cheapest and where they will be marketed are globalization issues and they have a direct impact on your pocketbook. As global conditions change, you will notice it in how far your money goes--or doesn't go.
The environmental damage is the most glaring negative to me of globalization. Since we can now export jobs and factories to countries that badly need the investment, and because of this are willing to overlook or refuse to establish any common sense environmental guidelines, then companies are tempted by the profit motive to ignore safeguards. They dump chemicals, emit more pollution and use cheap and available resources rather than conserve or reuse them. And virtually no one has noticed it is going on.
I think you could also look at the negatives of globalisation in terms of how it can actually diffuse certain forms of media but also ignore others. Lots of research has been done on how big brand names like Wallmart who sell so many CDs for example actually have massive power over artistic creativity, as some bands have to curtail their music to make it "fit" the Wallmart family image. Thus for you, you might not have the chance to be exposed to certain forms of media (film, book or music) because of the power that globalisation gives massive trans-national brands.
Well... I don't think that jobs probably do have something to do with you even as a teen. You are not that far away from needing a job yourself and presumably your parents need jobs. So globalization can impact you in that way -- if your community suffers from job loss due to globalization that will surely affect your quality of life.
I would also say that terrorism impacts you because of things like all the extra security that you have to go through if you want to get on an airplane, things like that.
However, if you do not want to talk about this stuff... the most plausible answer to me is that you might have fewer college opportunities if the US economy gets worse as a result of globalization. Tax revenues would go down and public colleges would have fewer spaces. Private schools might take more foreign students, leaving less space for you.
But as far as things that will affect your every day life, I do not think that there are many negatives to globalization for you.
While most teens may not believe that globalization affects them directly, it in fact does. I know you said that things such as jobs or terrorists do not affect you in terms of globalization, but they in fact do. You are probably close to the age where you can get a job, which mean that the job market will affect you, and as for terrorists, they are something that everyone needs to be aware of, because terrorists will not simply kill or "terrorize" adults. So these are topics that you do need to be aware of.
the biggest negative imapct can be on the small kiranas and retailer as fdi in both single brand and multibrand has entered enabling wallmart and big players to be in action in india.
thus retail will provide jobs but in expense of rulling out the self employed shopkeepers widely affecting 97 % unorganised sector in india
One of the greatest effects of globalization is unfair trade practices. These can have devastating consequences on certain factors of production if equality is not considered for all parties. One of the more contemporary problems might be the automobile disparity between Korea and the US. Korea allows 8000 cars a year, while the US allows an infinite number.
The effect of globalization on teens can be seen more clearly on the changing cultures. Globalization tends to promote cultural exchange across the different cultures across the globe. This means there is a tendency for cultures of all the countries to change in the direction of a common world culture. This is not necessarily a negative development. But most certainly, not all the features of a global culture will be better than the features of a existing culture of a country. For example, in India the general cultural movement away from joint families, and weakening of bonds of family relationships does have some disadvantages.
These cultural changes affect the teenagers more because they are do not have that deep attachment to the old values and culture, and are more open to change.