What farming method is used in dry or desert areas? (a) chinampas (b)drip irrigation (c)wind-powered pumps (d)aqueducts

What effect does plate tectonics have an organic evolution

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area