Q: You are presented with the quiz "What is generally true about blood going away from the heart?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "arteries generally carry oxygen-rich blood" and "arterial Blood Pressure Arteries conduct blood away from the heart". So, what's the best answer to the question?

OPTIONS:
- The bending of a ray of light
- it is 99% water
- A compound that donates proton
- To another location like underground
- it is usually low in oxygen
- it can be seen
- it has no hemoglobin
- it is usually oxygen-rich

A: it is usually oxygen-rich

Q: You are presented with the quiz "What causes pollution?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "using a car causes pollution" and "toyota car is truly the car for the present and the future". So, what's the best answer to the question?

OPTIONS:
- breathing
- flooding
- Toyota
- bad thoughts
- trees
- mold
- Nematoda
- chemicals

A: Toyota

Q: You are presented with the quiz "what do mammals use fur for?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "some animals' fur grows thicker for staying warm in the winter" and "mammals are animals with Fur". So, what's the best answer to the question?

OPTIONS:
- Movement
- growth
- attacking
- health
- reduced heat
- stay warm
- be cold
- prey

A: stay warm

Q: You are presented with the quiz "Adding salt to a liquid changes what aspect of the liquid?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "adding salt to a liquid decreases the melting point of that liquid" and "the melting point depends on the nature of the liquid". So, what's the best answer to the question?

OPTIONS:
- salinity
- Dilution
- energy
- nature
- Energy.
- heat
- ligt
- reduce

A:
nature