I think mankind comes across a lot of problem nowadays. One of the most important is an ecological one. Our planet is in danger today because of naturel disasters. One of the reasons of it is people's interference into nature. the large areas of forests are cut down. That's why we suffer of land slides and floods. I think it's not too late to save our planet. All nations must cooperate for the protectin of environment. We'd take care of animals,birds,plant trees and create national parks. We shoud clear rivers and lakes. It's important to recycle old paper. We shouls use bisycle instead of cars and public transport. We shoud change our attitude to our planet because the Earth is our home and we must save it.