Answer: supplied air mask
Explanation: because air can go in the mask and the gases and fumes can hurt you.
I say 60-year old single male, solemnly on the fact of that there single. I would think that with such age he could and if wanted to migrate he could with not having to deal with factors brought by others
You can write things down, read the material out loud, and read and reread your materials until you pretty much memorize it