Answer:
To get to the other side ;))))))))))))))
The answer is A
The focus is often on facts or evidence
You're welcome! ^^
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.
Answer:
plays that are tragic
Explanation:
Parallelism is arranging words of identical syntactical constructions in sentences.
We need a parallel, i.e. identical, construction for the phrase plays that are funny. Obviously, the word <u>when</u> does not help to create parallelism in the corresponding phrase. The solution is simple: we should repeat the beginning of the phrase and change the adjective.
The result is a sentence with a parallel structure:
<u>Plays that are funny</u> are more popular than <u>plays that are tragic</u>.