What If the world ends up like the movie 'The Happening'

Recently,my Moral teacher just taught us a topic on taking care of the environment.Then,she told us about the movie The Happening.It was about the environment and the plants.Human killed themselves because of a type of toxic spreaded by plants.So,that is why we should always take care of the environment to maintain the future.Otherwise,our life will be gone and the world will be empty.But....sigh,all the campaigns we have and it takes money is just a waste.People throw rubbish all around the corner.......Well,I may be blattering all about big people stuffs,but this is not just my life which will be saved but also our most loved family.....