While all densely populated developing countries face similar pollution problems, the leading businesses and the environmental laws of the developing countries obviously determines the amounts and types of pollutant produced, as well as the requisite expenditure for pollution control.
all densely populated developing countries face similar pollution problems, the leading businesses and the environmental laws of the developing countries obviously determines
each densely populated developing country faces a similar pollution problem, their leading businesses and the environmental laws obviously determine
all densely populated developing countries face a similar pollution problem; their leading businesses and environmental laws obviously determines
each densely populated developing country faces similar pollution problems, the leading businesses and the environmental laws of each developing country obviously determines
all densely populated developing countries face similar pollution problems, the leading businesses and the environmental laws of each developing country obviously determine
all densely populated developing countries face similar pollution problems, the leading businesses and the environmental laws of the developing countries obviously determines
each densely populated developing country faces a similar pollution problem, their leading businesses and the environmental laws obviously determine
all densely populated developing countries face a similar pollution problem; their leading businesses and environmental laws obviously determines
each densely populated developing country faces similar pollution problems, the leading businesses and the environmental laws of each developing country obviously determines
all densely populated developing countries face similar pollution problems, the leading businesses and the environmental laws of each developing country obviously determine
