Suppose you have a friend who wastes a lot of electricity and other resources, What could you say to your friend to encourage him or her to change some of those wasteful habits?

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

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

What element is able to combine with itself and hydrogen to form large molecules ?