A country loses excessive topsoil and needs to import more food, which increases the pressure on the soil in other countries; air pollution in one country causes acid rain in neighboring countries; excessive emissions of carbon dioxide cause global warming and sea-level rise, which almost can endanger all countries and regions. Which of the following items best summarize the main points made above. ['Environmental pollution has affected relations between countries and may cause international disputes.', 'The rapid development of the economy will inevitably lead to the intensification of environmental pollution. It is a rule that pollution is first and then governance is followed.', 'In terms of pollution control, developed countries are willing to take more responsibilities and obligations.', 'Environmental pollution has become a regional and international problem. Solving environmental pollution is a common task for humanity.']