Answer:
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1) N₂ (gas) ; that is, nitrogen (gas) ; (about 78%);
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and:
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2) O₂ (gas) ; that is, oxygen (gas); (about 21%);
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followed by argon, carbon dioxide, and others.
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it allows poets to remember and retell poems
it helps the audience absorb the poem
it creates a rhythmic pattern
it emphasizes inportant ideas
The sentence should be placed after sentence 4. The following sentence is a conclusion, as it sums everything up.
Binsey Poplars is full of unusual language, internal rhyme, alliteration, assonance, sprung rhythm and repetition. Hopkins developed his own unique sprung rhythm, based on a much older metric tradition with roots in Greek song and Welsh poetry.