It's 58 degrees outside and a meteorologist says a cold front is headed to you area. What should you wear to prepare? * sandals
rain jacket
snow jacket
hat and gloves

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

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.