There are approximately how many people in the world today?
1.5 billion
6.5 billion
3 billion
10 billion

What type of government does costa rica have?

If a population is growing quickly in a small area then what must increase as well

Which part of a mountain receives the majority of moisture due to the rain shadow effect? a. the leeward side b. the windward side c. the bottom of the mountain d. all parts of the mountain receive equal amounts of moisture.