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 the number of alveoli?

A: Dana

Problem: Two six graders learned about the lives of animals. Lori learned more about fish, while Dan learned more about mammals. Which student learned more about the lungs of mammals?

A: Dan

Problem: This year thee comets would be of interest, comet A, comet B, and comet C. Comet A and comet B would enter the inner solar system. But comet C would not enter the inner solar system. Moreover, comet A is categorized as a bright comet, but comet B is categorized as a faint comet. Would comet B be visible or invisible to naked eye?

A: invisible

Problem: Two physicists studied the influence of kinetic energy on the environment. Will studied high temperature environments, while his pal Don studied cooler environments. Which person learned more about the influence of high temperature on the speed of matter particles?

A:
Will