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 early peoples developed simple tools such as, spears and axes made from bone, wood, and stone. Human beings lived in this manner from earliest times until about 10,000 BCE, when they started to cultivate crops and domesticate animals.This is known as the Neolithic Revolution.The Neolithic Revolution was a fundamental change in the way people lived.uman beings lived in this manner from earliest times until about 10,000 BCE, when they started to cultivate crops and domesticate animals. This is known as the Neolithic Revolution. The Neolithic Revolution was a fundamental change in the way people lived.