answer: #Person1# and #Person2# think the environment is a big issue in their countries. #Person2# says their biggest issue is water and #Person1# says theirs is air pollution. They agree that there needs to be an international response to the problem of environmental pollution.
documents: #Person1#: Is the environment a big issues in your country? It is in mine. 
  #Person2#: It is in mine too. The biggest issue is water. The climate is dry and so water conservation is very important. 
  #Person1#: What methods do you use to conserve water? 
  #Person2#: Water is rationed. We can only use a certain amount each month. It means that we cannot use some modern household items, like washing machines. They use too much water. 
  #Person1#: I see. I think the biggest environment problem in my country is air pollution. 
  #Person2#: Yes, I agree. The air here is much more polluted than in my country. Of course, my country is more agricultural and has much less industry. 
  #Person1#: We have reduced emission of air pollutants in recent years, but cars are still a major source of them. Factories have become cleaner as stricter environment pollution law have been introduced. 
  #Person2#: The problem is now on a truly global scale. I don't believe that any single country can do anything about it. 
  #Person1#: I think you're right. There needs to be an international response to this problem.