Almost every country in the world has problems with the environment ,affecting its land , air or water . I believe the main problems on land are global warming , soil erosion, building in rural areas, deforestation and litter on the streets. These troubles can be diverse effects on the earth .Perhaps, the most helpful and useful thing we can do to tackle these difficulties is to refuse to give planning permission for new apartment blocks, in view of the fact in these cases much land is decreasing .As a result of this our nature is damaged. In addition , people should use biodegradable objects, such as carrier bags instead of plastic bags.