Problem: Mike likes to visit places. This winter he is visiting Greenland. First, he visited Lake A, which is very small. Then he visited Lake B, which is huge. While visiting Lake B he went to a local pub. There he heard other tourists talking about two nearby glaciers, glacier C and glacier D. They said that glacier C had a snowfall and the snow became part of the glacier, but glacier D didn't have any snowfall. Mike is getting ready to visit those glaciers. Is ice thinner or denser in glacier D than in glacier C?

A: thinner

Problem: Two sister cities, located at different altitude, are affected differently by climate change. Bergen is at 60 degrees N, while Seattle is at 47 degrees N latitude. Which city became more accustomed to adapting to ecological variability?

A: Bergen

Problem: Two identical twin brothers go to the doctor to get blood work done and also checked for STDs as part of their routine medical checkups. Neither man thinks they have caught anything, but both are sexually active so they want to get checked out. After getting the test results, the doctor tells Hank that he has strep throat, but no STDs. Jacob is told that he has hepatitis B. The doctor gives both men information about what medication to take and what they need to do to manage their diseases. Which man is more likely to have gotten a hepatitis B vaccine?

A: Hank

Problem: Mike and John are brothers. Their dad sent them to the doctor's office to get tested for hepatitis because Mike was feeling sick all the time. It turned out Mike has hepatitis B, while John doesn't. Which brother has a disease which causes yellowing of the eyes?

A:
Mike