You are presented with the quiz "A plant requires _ for photosynthesis" 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 "sunlight is composed of photons, or particles of solar energy". So, what's the best answer to the question?
OPTIONS:
- proteins
- photons
- Light
- sun's heat
- nutrients
- mitochondria
- sugar
- plasma

Answer: photons

You are presented with the quiz "What do animals require for survival?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an animal requires air for survival" and "oxygen Oxygen is in the air we breathe". So, what's the best answer to the question?
OPTIONS:
- food
- glycogen
- Lithium
- water
- sugar
- Helium
- Aluminum
- Oxygen

Answer: Oxygen

You are presented with the quiz "readily available liquid manure is a what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "urine is the liquid waste product of the body that is excreted by the urinary system" and "another readily available liquid manure is human urine". So, what's the best answer to the question?
OPTIONS:
- aqueous solution
- more abundant
- share properties
- competing for resources
- major threat to health
- animal transport
- looseness of dirt or compost
- product of the body

Answer:
product of the body