Answer: Level B provides the same respiratory protection as Level A but less skin or outer body protection. When Level B is used: This level is used when the hazardous materials have been identified but do not require a high level of skin protection.
Explanation:
Everything because what would we do without the world idk I think c
False it is false since pollution isn't only in the city
The heart functions as a <span>muscle that helps to pump oxygen around the body.
Hope this helps. (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧ </span>
