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.
Quick Answer. During the Neolithic era, the Earth had a warmer climate than it had in the previous era, which allowed Neolithic people to keep domesticated animals for food and to eat food that they farmed. They farmed vegetables such as wheat, barley and lentils. During the Neolithic era, people started to give up their nomadic lifestyles and build communities.