Substances that run off fields and roads often a. cause less damage than air pollution b. harm ocean organisms indirectly c. are recycled as petroleum products d. harm ocean organisms directly

Answerbecause of improved transportation, communication, and other advantages;

The name may be in importnce  to them

Ashould be answer.

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.