There are many ethical issues, social media sites like Facebook collect data on thier on users even when the user isn't on thier app or website, people post really stupid things that could get them in trouble with thier school or even the law. There are many privacy concerns with these social media platforms, social media platforms are able to record ur gps coordinates, they can gather data on ur ip address and your phone comtacts.
I do not believe a comma is necessary in this sentence at all. In fact, if you were to insert a comma after the word grazed (as you maybe tempted to do) it could change the meaning of the sentence. If you meant the lions were oblivious of the presence of the gazelles, you would insert a comma after grazed. But if you meant the gazelles were oblivious of the presence of the lions, you would leave the comma out.
Think about it, 16 years old? You become a adult when you turn 18. You would also have to be more responsible because 18 is the age you're actions have huge consequences. If you're 16 the worst that could happen is that you get grounded!
