weather pattern in the Pacific Ocean

the way of life of a group of people who share similar beliefs and customs

development of a world culture and an independent world economy

the average number of people living within a square mile

to move to another country

movement to cities

a number limit on imports from a country

countries working toward industrialization

spreading knowledge to other cultures

lack of food in a place; time of starving is called

the blanket of gases, or air, surrounding the earth is called

the following is the earth's hard outer shell, what we view as land areas

the following includes all the water in the oceans, lakes, rivers, and glaciers, plus all precipitation

The largest ocean is 

The largest continent is 

The smallest continent is