You are presented with the quiz "What do plants require to make food?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "aplant requires sunlight for photosynthesis" and "photosynthesis is the process of making food". So, what's the best answer to the question?

OPTIONS:
- nutrients
- sunlight
- photons
- Energy.
- Light
- Proteins
- power
- heat energy

Answer: sunlight

You are presented with the quiz "What is formed by mechanical weathering?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "the surface of a beach is formed by mechanical weathering" and "and that sand is available to redeposit on the beaches". So, what's the best answer to the question?

OPTIONS:
- planets
- coral
- calcium
- ore
- sand
- soils
- tube
- peat

Answer: sand

You are presented with the quiz "What can be used for keeping warm?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "thick fur can be used for keeping warm" and "all mammals have fur or hair". So, what's the best answer to the question?

OPTIONS:
- electricity
- Limbs
- thick hair
- sweat
- ice
- evaporation
- cold blood
- four limbs

Answer: thick hair

You are presented with the quiz "What can you use in wiring to produce current? " But you don't know the answer, so you turn to your teacher to ask for hints. He says that "wiring requires an electrical conductor" and "most metals are conductors of electricity". So, what's the best answer to the question?

OPTIONS:
- two
- waves
- bamboo
- coiled
- metals
- energy
- tube
- photons

Answer:
metals