Q: You are presented with the quiz "What can soil have a positive impact on?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "zinc has a positive impact on the healing of wounds" and "sources of zinc are soil, zinc oxide, zinc sulfate, zinc chelate". So, what's the best answer to the question? | OPTIONS:
- nutrients
- organic molecules
- consumers
- healing of wounds
- water conservation
- important habitats
- watershed
- Most plants
A: healing of wounds

Q: You are presented with the quiz "What can be used to reveal what lies hidden in darkness?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "alaser is used for producing light" and "light reveals what lies hidden in darkness". So, what's the best answer to the question? | OPTIONS:
- A laser
- Night
- photons
- energy
- Electrical
- Blackness
- heat
- Hidden health issues
A: A laser

Q: You are presented with the quiz "What do mammals have that help maintain temperature?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "mammals have a layer of fat under the skin to help insulate the body" and "when stored in the body, fat helps maintain body temperature by acting as an insulator". So, what's the best answer to the question? | OPTIONS:
- body
- bone
- skin
- fur
- hair
- wool
- Fat
- coat
A: Fat

Q: You are presented with the quiz "Meat, fish and chicken are used to do what by the human body?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "protein is used to repair cells by the human body" and "meat, fish and chicken are rich sources of protein". So, what's the best answer to the question? | OPTIONS:
- energy
- heat energy
- destroy cells
- Relieve pain
- damage cells
- survive
- repair cells
- break down cells
A: repair cells