Part A Why would smooth muscle associated with lung bronchioles dilate while smooth muscle associated with arterial walls constricts when stimulated by norepinephrine neurotransmitter? different receptor types different target organs different smooth muscle different body systems

8. Wolves are at the top of the wolves all but disappeared from Yellowstone. Which of the following was a likely effect of the wolves' disappearance?

4. If a farmer over-hunted a population of insect-eating birds, what immediate change would likely be seen in his land?

5. A factory is dumping wastewater into the river that feeds a nearby lake. The populations of lake plants and animals will likely

6. A forest is being cleared for a new housing development. What would be an expected outcome of this environmental change?

9. In a study of the habitat of a population of raccoons, scientists found that the number of raccoons increased where people built houses. What might the scientists conclude from this observation?