used in the 1970s and 1980s
Airborne toxic materials may be gaseous (for example, mustard gas and chlorine gas) or particulates (such as biological agents). Many filters include protection from both types.
The first gas masks mostly used circular lenses made either of glass, mica or cellulose acetate. With the exception of the latter, these materials were quite brittle and needed frequent replacement. Later on, the Triplex lens style (two layers of glass and one layer of cellulose acetate in between)[1] became more popular, and alongside the simpler cellulose acetate they became the standard into the 1930s. Panoramic lenses were not popular until the 1930s, but there are some examples of those being used even during the war (Austro-Hungarian 15M). Later, polycarbonate started being used for its strength.
Some have one or two filters screwed (via inlets) onto to the gas mask while others have a large filter (coffee can filter) connected to the gas mask with a hose that is sometimes confused with an air-supplied respirator in which an alternate supply of fresh air (oxygen tanks) is delivered.
Urbanization creates of more job opportunities for the people and thus, to the generation of more money.
Answer:
The answer is the first one. Odysseus and Jacob are connected through connections amongst Rachel and Penelope, God and Athena, and their voyage all through life. Odysseus and Jacob are first contrasted with their association with their spouses. Odysseus adores Penelope with his entire existence and does everything to get to her. Penelope is the person who keeps Odysseus solid:).
Explanation:
I dont have this assignment..
But it seems like you, choose a quotation from the story
Say if you agree with the quote or disagree
Cite evidence to support why you agree or do not agree.