Q: You are presented with the quiz "What do living things require?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "living things all require energy for survival" and "food is the source of energy for living things". So, what's the best answer to the question? | OPTIONS:
- blood
- water
- lipids
- health
- oxygen
- food
- cells
- Sun
A: food

Q: You are presented with the quiz "What redirects light in a camera?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "amirror is used for reflecting light" and "light enters the camera through the lens and is reflected upward by the mirror to the ground glass". So, what's the best answer to the question? | OPTIONS:
- cactuses
- microscope
- photons
- electricity
- The shutter
- A mirror
- A photo
- The film
A: A mirror

Q: You are presented with the quiz "What causes rocks to weather?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "rocks interacting with wind over long periods of time causes weathering" and "on Earth, rocks are weathered by wind and water, creating soil and sand". So, what's the best answer to the question? | OPTIONS:
- seasons
- force
- erosion
- storms
- water
- heat
- lightning
- gas
A: water

Q: You are presented with the quiz "viruses are so small that they can be seen only with a device developed where?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "viruses are so small that they can be seen only with an electron microscope" and "electron microscope is developed in Germany". So, what's the best answer to the question? | OPTIONS:
- A computer
- sunlight
- Light
- germany
- retina
- at home
- canada
- taiwan
A: germany