Which was the main way Andean peoples modified their environment to grow more food? A. by building stone walls B. By terraces C. by cutting down forests D. by irrigating fields

Adisadvantage of adding a vegetarian hot-food option to a school lunch menu is that it would a. force all students to change their diets. b. eliminate a meat option from the menu. c. only some students on special diets. d. increase the amount of food that is wasted.

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

In which horizon of soil profile is prevent material usually found