Why does the author refer to the gas mask as “old reliable

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.

Exposure therapy, contingency management, behavioral activation, modeling, and biofeedback are all types of:
A. learning-based techniques
B. instinct-based techniques
C. behavior disorders
D. positive reinforcement

why do people prefer fast food restaurants over international/ traditional restaurants? unlike the past when it was vice versa

Which one is correct and why? (Grammatically)

if someone sent me a pic of math homework should I say:
1. That's hard
2. It's hard

If someone sent me a pic of new dress should I say:
1. That's hot
2. It's hot

Identify three things that the poet knows he will give up once he embarks on his
journey of protest.

Which transitional word best fits at the beginning of sentence 9?

Use the word given in capitals at the end of each sentence to form a word that fits in the gap. The word in each pair of sentences is formed the same way. There is an example at the beginning (0).

out/week/lot/luis/a/the/doesn t/ go/ during.

Which of the following sentences
correctly punctuates the
transitional phrase?
A. Even more, I was cheering for the team that
ended up winning."
B. More than winning the game we also won the
state championship.
C. Nevertheless I must say the opposing time
deserved some praise.
D. Above all it was significant that both teams
exhibited good sportsmanship and enjoyed the
game.

Choose the coordinating conjunction that establishes a logical relationship between the two clauses.
Shrimp can eat pretty much anything,
the best food for them is ground-up wild fish.
or
but
for
nor
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How will you prepare if you learned that an earthquake will shake your place?​

3.
Which word does the underlined participle describe in the sentence below?
The judge revealed the surprising winner of the contest.
O A judge
OB winner
OC contest
OD revealed

1- This is the third book I ............. this year.
a)bought
b)have bought
c)buy
d)had bought

2- The car .............. fast when it hit the tree .
a)was moving
b)has moved
c)is moving
d)moves

3- He ............ in a hotel since his house collapsed .
a)has been living
b)had lived
c)lived
d)was living
​

How gandhi appeals to emotions?

Master of lake town actions and beliefs

Summary that describes the changing relationship between the children and boo radley

HELP URGENT!!!!!! Will give brainliest

MLA citation of an online journal article

Help plis help plis

According to the highlighted
section of this creation story,
when did the twins begin
arguing with each other?
A. when the grandmother began to favor
one over the other
B. when they were born
C. before they were born

A comparison that uses "like" or "as" is known as what?

Question 6 options:

1. A simile


2. An idiom


3. A metaphor


4. An expression

a wilted flower

phrase or a sentence?

What are the basic characteristics of career management?

which reading strategy refers to reading only the key words and phrase?

Which statement best summarizes the central idea of the quatrain?

The mistress is not as beautiful as natural elements.
The mistress’s hair is dull and wiry, unlike the whiteness of snow.
The mistress has eyes like the sun and lips more red than coral.
The mistress’s appearance is similar to that of the sun, coral, and snow.

Which of the following sentences
punctuates the appositive or
appositive phrase correctly?
A. Shannon, my sister,
owns a healthy living
company that allows people to exercise while at
work.
B. Shannon, my sister owns a healthy, living
company that allows people to exercise while at
work.
C. Shannon, my sister owns a healthy living
-company, that allows people to exercise while at
work.
D. Shannon my sister owns a healthy living,
company that allows, people to exercise while at
work.

How jeff escape from prison in escape from spiderhead

He doesn’t wants to eat cakes

If a leader tells all of the other members exactly what to do without asking for feedback, s/he is likely taking on what type of leadership style?

Choose the answer that best completes this sentence.

In 1863, President Abraham Lincoln designated the last Thursday in November as a national day of Thanksgiving, _____ in 1939, President Franklin Roosevelt decreed that the holiday should always be celebrated on the fourth Thursday of the month.
A. for example
B. therefore
C. but
D. so

Which of the following does not describe part of the "fight or flight" mechanism?
A. it's a suvival instinct in humans
B. it gives the body an "adrenaline rush"
C. the body gets tense and ready for action
D. there is uncontrollable yelling