I have decided to write about Global warming because it is something we don't normally talk about, and for that matter we don't do much about. Global warming is mostly caused by humans because of our lack of knowledge and care about the environment. The first signs of trouble in the ozone layer were noticed in 1985 and seens , the problem hasn't gotten any better
I thought this was a neat way of showing awareness of pollution. Its a sign that with a glance people know its a warning for something hazardous. If humans continue living the same way they do today, it will become very hazardous. Many scientists claim that this will soon be a reason for human extinction.!