Problem: Barbara and Jane are two students. They both like meteorology. Barbara studies the formation of the ozone layer, while Jane studies about the stratosphere. Which student learned more about temperature inversion?

A: Jane

Problem: Hammond and Trip were two cities on the Eastern and Western shores of lake Michigan. They both get lots of snow during winter, but the lake effect snow which adds feet of snow to the yearly total, lingers much longer on the eastern side of the lake. Which city has more lake-effect snow conditions related expenses?

A: Hammond

Problem: A doctor tested two people for HIV. Tom had the virus in his blood, while Nick didn't have HIV, he was healthy. Tom has apparently had the virus for 20 years. Which person developed frequent infections?

A: Tom

Problem: Two students learned about respiratory systems in animals. Dana learned more about mammalian lungs, while Barry learned more about the lungs of birds. Which student learned more about surface area for gas exchange between the lungs and bloodstream?

A:
Dana