Which statement is correct?

a. acid rain and air pollution are major environmental concerns that are being addressed by new technology.

c. the action program to arrest acid rain is a significant movement led by japan to address pollution.

b. global warming is not an issue in east asia.

d. none of the above

Most countries in the middle east must import a majority of their a. gasoline b. oil c. food d. water

b) is there any ordinal sense to zip codes? in other words, does a larger zip code tell you anything about a location compared to a smaller zip code?

How does rain water cause erosion and deposition? a. when acidic water soaks into the ground, water dissolves limestone, resulting in the formation of caves.b. when a river overflows it moves downhill resulting in the formation of caves.c. when it rains, water flows into rivers and streams and moves back to land, resulting in the formation of caves.d. when water empties into lakes, sediment is deposited, resulting in formation of caves.