Problem: Hawk and Brunt were two colleagues studying about plants. Later on, Hawk got specialized in normal plants, while Brunt decided to learn more about epiphytes. Which colleague studied more about plants that grow on other plants?

A: Brunt

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 development of their muscles later?

A: Justin

Problem: Adam wants to show his little brother a trick. He gets a bucket of water and says to him "I bet i can turn this bucket upside down and no water will fall out". His brother doesn't believe him of course. So Adam takes the bucket by the handle and quickly starts spinning it in a circle. Which is creating the centripetal force on the water, Earth or Adam?

A: Adam

Problem: Alpine lake had low water levels this spring although the lake is usually at full level by late spring. Rangers were planning on letting water out of the lake in the fall so that ice will not damage docks and other structures around the lake. The water levels were high enough in the fall so they proceeded in lowering the water level by 10 feet.. When are the water levels lower in spring or during fall?

A:
during fall