You are presented with the quiz "What wets the skin, and when it evaporates, it cools the body?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "sweat wets the skin, and when it evaporates, it cools the body" and "sweat is made of salt and water". So, what's the best answer to the question?
OPTIONS:
- Heat energy
- salt and water
- acetic acid
- urine
- ice
- Chlorophyll
- white vinegar
- blood

Answer: salt and water

You are presented with the quiz "what uses webbed feet for moving faster through water?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "webbed feet are used for moving faster through water by aquatic animals" and "ducks are aquatic birds". So, what's the best answer to the question?
OPTIONS:
- squids
- humans
- h2o
- trout
- octopus
- insects
- ducks
- fish

Answer: ducks

You are presented with the quiz "what might die if it becomes too hot?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "if an organism becomes too hot then that organism may die" and "bacteria are single-cell organisms". So, what's the best answer to the question?
OPTIONS:
- tunicates
- bacteria
- gamma rays
- clouds
- some mammals
- h2o
- Frogs
- humans

Answer:
bacteria