Which of the following describes how plant and animals each contribute to the survival of the other in a cooperative interdependence? a. animals supply O2 to plants and plants supply CO2 to animals
b. animals supply CO2 to plants and plants supply CO2 to animals
c. animals supply O2 to plants and plants supply H2O to animals
d. animals supply CO2 to plants and plants supply O2 to animals

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

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?