How can using mass transit reduce exhaust emissions?

Mass transit is already going to put emissions into the air. You going on it isn't going to add more, but using your own vehicle will.

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.

answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;