In the case of traditional geothermal power generating plants, individual geothermal fields can typically be used for only a few decades before the rocks become too chilled for efficient power generation. a. True
b. False

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals

Can someone me with this plz? ! i'm putting 20 points on it!

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