Hardened magma in a volcanoes pipe that remains when softer rock around it has worn away is called a

Which of the following is evidence to the past existence of glaciers?

Match your vocabulary word to its definition. 1. emigration 2. immigration 3. migration 4. overpopulation 5. sustainable development 6. under population 7. unsustainable development 8. urbanization the movement from one place to another the number of people exceeds the available natural resources in an area leaving one's homeland to settle in a new place the increase in the population of a city the movement of people to a new country the ability to meet current needs without reducing the ability to meet future needs resources being used up at a faster rate than they can be replenished birth rate insufficient to replace the existing population

Read the article titled "castro resigns." why did the us impose trade sanctions against cuba in 1962?