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 are some facts about Neolithic shelters? Quick Answer. During the long Neolithic period, from 6800 to 3200 B.C., shelters were built using thick timber posts, clay and stone for the foundation and walls, while roofs were made from tree trunks, clay and hay.