Question: You are presented with the quiz "what can affect the level of a lake" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "damming a river can cause a lake to form" and "there is no spillway at Lake Tahoe Dam". So, what's the best answer to the question?
OPTIONS:
- boat traffic
- flooding
- boat shipping
- erosion
- Pollution
- salinity
- over fishing
- spillways
Answer: spillways

Question: You are presented with the quiz "what do lawns eat?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "nitrogen is found in proteins, nucleic acids, and chlorophyll" and "lawns eat nitrogen". So, what's the best answer to the question?
OPTIONS:
- hydrate their cells
- density
- weathering
- organic matter
- By wind and rain
- Something made from fermented ricce
- proteins and nucleic acids
- plastic
Answer: proteins and nucleic acids

Question: You are presented with the quiz "What uses lungs to breathe air?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "lungs are used for breathing air by land animals" and "elephants are the largest animals on land". So, what's the best answer to the question?
OPTIONS:
- elephants
- Frogs
- humans
- the sun
- some mammals
- monotremes
- bacteria
- rock candy
Answer:
elephants