sentence: From an environmental perspective , the use of public transport ensures that carbon emissions from automobiles are prevented , helping to preserve the balance of nature even in big cities like Tokyo and Delhi , where the carbon emissions are very high .
modified: From an environmental standpoint , use of public transport ensures that carbon emissions from automobiles are prevented helping in preserving the balance of nature even in big cities like Tokyo and Delhi where the carbon emissions are very high .
transformation: NOUN, DET, PUNCT, PART, VERB:FORM, PUNCT