Why must farmers in the western states of the Midwest irrigate?

What does the angle of parallax determine

What are the advantages of wind power? always available can use anywhere free after equipment is built non-polluting energy source useful in remote areas

What is the densest part of earth? a. core b. crust c. lithosphere d. mantle

16. Which one of these is NOT a dwarf planet? A) Pluto B) Charon C) Eris D) Mercury

What is the theory that states that today's continents were once joined together in one large landmass? a. theory of continental drift b. theory of land distribution c. theory of mass emersion d. theory of shifting borders

What statement about rainforests is false?

How many offers were made ro the palestinians to create their own átate

Which area of rivers and streams will most likely contain the most sediment? a. the source b. the mouth c. the middle portion d. none of the above

Three economic principles of natural resource management are 1) Opportunity Cost; when you make a choice, you lost the opportunity to choose other things 2) Time preference; how fast you can wait for a return on your investment 3) Discount rate;

Acid rain is a serious problem in China. true or false?