Answer:
A. They destroy antigens because they are a foreign object.
Answer:
Dusting, sweeping, and vacuuming are some household chores that help your bones.
Explanation:
Hope this helps! :)
on average a perdon doesn't really breath .but people on the other hand breath about 16 times per minute ,about 960 times per hour and 23040 times a day and 8,409,600 times in a year so
you answer is 8,409,600 breaths in a year
