Because of the water that goes through the ground doesn’t make up what’s it up
Answer:
b. It is difficult to isolate the multiple sources of social problems.
Explanation:
1) Exercise it by singing and hitting different notes, however don't go overboard
2) Make sure you don't overuse your voice, as well as trying to rest your voice when you are sick
3) Overall, have healthy habits, like not smoking and drinking a sufficient amount of water.
What it is. How it can harm people. How dangerous it is. How people get it.
Answer: b
explanation: it mentions both education levels and careers. it is also a well-known truth.
