Q: Rob is an environmental scientist. He was doing a study on agroforestry. To test the sustainability of agroforestry he conducted two pilot projects, pilot A and pilot B. In pilot A, he used a land for agrofroestry. In pilot B, he used a land for usual row-cropping. He needed to find the pros and cons of both systems. Would pilot A see less or more clean water than pilot B?
A: more

Q: Beijing recently opened several new coal-fired power plants over the last few months. In Montreal, there have been large reductions in sulfur oxides produced by manufacturing plants after a recent referendum. Which area is less likely to have acid rain?
A: Montreal

Q: Blue island and Red island were two big sister islands situated 100 miles from each other. People on Blue island used gas powered vehicles, while people on Red island used electrical vehicles. The people on Blue island presented more respiratory problems. Which island had more days with smog?
A: Blue

Q: Two sisters named Mary and Ann went in for a blood test and found out that Mary had sickle cell anemia. Ann was normal. Which sister did not have a disease in which a blood protein called hemoglobin is produced incorrectly?
A:
Ann