Briefly, what support do you have for your hypothesis. Begin with economic theory you can explain to support it, then add economic journal articles, industry  briefings,  etc.   to  show  this  theory  has  support.   Support  in  the  form  of peer-reviewed research.  Check Google Scholar and search with keywords) The hypothesis/project question: What is the relationship between CO2 emissions and the variables listed below per country? Population Population Density Annual GDP(US dollars) GDP per capita Manufacturing Fossil fuel consumption, measuring the percentage of the total energy consumed  Renewable energy consumption, measuring measuring the percentage of the total energy consumed  Forest area, measuring in sq km Government expenditure on education, measuring in the percentage of total government spending