Problem: Adrian and Justin are brothers who are currently undergoing puberty. Adrian is nearing the end of puberty and his rate of height growth is low. Justin has just started puberty, though, and his rate of height growth is currently quite high. Who will experience growth of their muscles sooner?

A: Adrian

Problem: Bill and Bob were two brothers. they were both into physical exercise, but Bill chose weight lifting, and Bob running. Which brother had more muscles contract against a resisting force?

A: Bill

Problem: Two brothers studied chemistry in school. Ted studied alkanes, while Ned studied cycloalkanes. They both received grade A. Which brother learned more about ethane?

A: Ted

Problem: Two twin brothers had very different blood pressures. Tom had very high blood pressure, while Dan had low blood pressure. Which brother doesn't have the diastolic blood pressure always 90 or higher?

A:
Dan