Эссе на тему " the most important ecological problems", 90-100 слов

The problem of ecology is very controversial nowadays. There are a lot of different problems that people should solve together: pollution of air, rivers and ocean, deforestation and, of course, one of the most important problem today. It's global warming!  
I am sure, everyone can help to save the environment and nature. Firstly, we should not litter on the streets, throw thing into the water and save the water!
We should not fire in the forests because it is usually the cause of forest fires.
We always must remember about our natute and help it all the methods we can!

100 words!