In-facepiece dust concentration is changed dozens of times in a matter of minutes due to changes of the size of the gaps between the mask and face. Source. A respirator is a device designed to protect the wearer from inhaling particulate matter, including airborne microrganisms, fumes, vapors, i.e. gases.
Why join Brainly? A community for students. Products of the neolithic culture Steel plows Boats with sails Domesticated dogs Wild figs. the answer would mostly likely be referring to things that actually were of use to the neolithic people and agriculture was the biggest thing making the answer steel plow. anonymous.
These two areas were even larger than other Neolithic societies. As in the Paleolithic Age, Neolithic art also serves as justification to the changes these societies underwent. The advancements in society, economy, and technology in the Neolithic Age paved the way for all of modern civilization.