present environmental problems are many đc ng attention. environmental pollution is a real problem of panned vs cn people. the current environment is polluted by dust, smoke, greenhouse effect ... largely because cn ng cause as litter, discharge of waste disposal, yet through the process, and. deforestation is also mguyên cause pollution. so is the environmental protection work which each ng we need to shut up.
đang được dịch, vui lòng đợi..