What is the difference between endocrine and exocrine glands?
A) endocrine glands secrete hormones into the bloodstream and exocrine glands secrete products into ducts.
B) endocrine gland secrete products into dust and exocrine glands secrete hormones into the bloodstream.
C)endocrine glands produce nutrients for cells and exocrine glands absorb minerals for cells.
D) endocrine glands absorb minerals for cells and exocrine glands produce nutrients for cells.

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