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.
This period of prehistory lasted from c 4000-2000 BC. Neolithic means âNew Stone Ageâ. During the Neolithic period nomadic hunter-gatherers were living alongside the more permanent dwellings of the first farmers.Before they could plant their crops, the farmers first had to deforest areas of land.On the cleared areas they started to grow cereals and breed cows and sheep; but they also hunted and fished.uring the Neolithic period nomadic hunter-gatherers were living alongside the more permanent dwellings of the first farmers. Before they could plant their crops, the farmers first had to deforest areas of land. On the cleared areas they started to grow cereals and breed cows and sheep; but they also hunted and fished.