Place each of the terms in the proper category to identify whether they arise from the ectoderm, mesoderm, or endoderm. thyroid thymus anterior pituitary

Scientific thinking: what clues about biology might road kill provide?

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

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