How does the chinese government attempt to keep its population under control?

The point where two air masses meet is called a

What type of aid does nigeria receive? short term, tied, voluntary, bilateral, multilateral or long-term?

Most of the volcanic activity that occurs in the ring of fire is a result of the a. formation of mantle plumes away from plate boundaries. b. subduction of one plate under another. c. movement of two plates away from each other. d. sliding of one plate past another.