Specialized cells are found only in O animals

O single celled organisms

O bacteria

O many celled organisms

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

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

What are examples of the plant life and animal life that can be found in each type of terrarium