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.
What materials were used to make buildings in the Neolithic period? Neolithic buildings and dwellings were characterised by using materials such as large stones. The Neolithic Age is often referred to as the Stone age. Some of the stones, kn â¦ own as megaliths, had a mass of up to 4 tons, while the Neolithic people also used Trilithons, which weighed around 45 tons.