Since air pollution creates a negative externality, A. social welfare will be enhanced when some, but not all air pollution is eliminated. B. governments should encourage private firms to consider only private costs. C. social welfare is optimal when all air pollution is eliminated. D. the free market result maximizes social welfare.

A. social welfare will be enhanced when some, but not all air pollution is eliminated.

C. social welfare is optimal when all air pollution is eliminated.

Explanation:

A negative extenality depicts cost suffered by a third party as a result of an economic transaction. From the above social welfare will be promoted if air pollution is reduced since it only partly reduced pollution. Social welfare would only be optimal when all pollution has been eliminated. To enhance social welfare and reduce or ultimately eliminate pollution, government usually makes use of tax measures(on pollution producing factories).

50% because no one is smart enough to relize that money makes the world go round and 99% of the earth hates donald trump the other 1% is the republicans go figure right

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.