Answer: Integumentary.
Explanation:
The integumentary system is the system that protects the body from damage such as loss of water or abrasion from outside. For example, nails, hair, skin, etc.
Because second hand smoke can and will affect the lungs of everyone who is around, not just the smokers
Answer:
a
Explanation:
2 seconds, right immediately after noticed it. Despite of the messy children.