Answer:
I would explain to her that most likely the teeth will not repair themselves due to the fact that, unlike bone, enamel does not contain cells that are capable of remodeling and repair. However, some remineralization is possible.
Explanation:
This is correct.
Answer:
If air is polluted, the air contains harmful gases and health status become poor. In contrary, if environment is clean and fresh, the health will be good. Therefore, health, population and environment education are interrelated in physical aspect. Health, population and environment are integrated terms.
Car accidents I think I’m not for sure
I'm guessing c since it's the only one talking about cultural.