Has human harmed the Earth or made it a better place ? In my opinion , the former is right . We can say ‘ Human has ruined the Earth . Why ? Watch news . You can find out how much people break the environment . Let me explain some examples . The most serious crime we have done is air pollution . Most people drive cars almost every day and they make a lot of bad gas which make the environment be polluted . on the road , we can see many people using a scarf to prevent from dirty air . Second , cutting forest is also a big crime . People are doing this again and again to build many buildings and make many books . I agree they are so important for us , but we should know there is nothing which can make air cleaned like forest does . It ’ s time to protect our valuable environment .