Problem: Two countries had big rivers discharging in the same ocean. Finland was very aware of environmental pollution and acted accordingly, while Russian practiced conventional agriculture and used fertilizers. Which country caused more hazardous chemicals to reach into the ocean?

A: Russia

Problem: John is trying to buy a house. Today, he saw two houses, house A and house B. House A was build in the 1920s. It has lead plumbing pipes and lead based paint. House B was build recently. It does not have lead plumbing pipes or lead based paint. Would house A less likely or more likely cause brain damage than house B?

A: more likely

Problem: Two brothers went to the doctor's office for an appointment. The doctor discovered that Tim had very high levels of cholesterol, while Jim had normal levels. Which brother experiences a lowered oxygen supply to the heart muscle?

A: Tim

Problem: Two cousins lived 10,000 miles away from each other but often talked about visiting the Hawaiian islands together. Lilly lived in Maine, while Heather lived in Hawaii. Which cousin lived farther from Lanai?

A:
Lilly