The governments of both the USA and Canada are trying to solve the problems caused by acid rain in a number of ways.
نابودی جنگل ها
Land erosion caused by widespread deforestation.
It is understood that deforestation reduces available water and increases desertification.
Conservationists are trying to save the whale from extinction.
گرم شدن کره زمین
World leaders will address the problem of global warming.
اثرات گلخانه ای
An increase in atmospheric carbon dioxide may intensify the greenhouse effect and cause long-term climatic changes.
The tests showed high levels of pollution in the water.
لکه ی نفتی
Just when it looked like it might be safe to go back in the water, an oil slick washed up on the beach.
The process recycles domestic waste to produce fertilizer.