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.
The beginning of the Neolithic culture is considered to be in the Levant (Jericho, modern-day West Bank) about 10,200â8,800 BC.It developed directly from the Epipaleolithic Natufian culture in the region, whose people pioneered the use of wild cereals, which then evolved into true farming.he Neolithic 1 (PPNA) period began roughly 10,000 years ago in the Levant. A temple area in southeastern Turkey at Goebekli GÃ¶bekli tepe dated 9,500 9500 bc may be regarded as the beginning of the. period