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yaroslaw [1]
2 years ago
10

What gases make up our atmosphere and their percentages??

Biology
1 answer:
Eduardwww [97]2 years ago
3 0
The permanent gases whose percentages do not change from day to day are nitrogen<span>, </span>oxygen<span> and</span>argon<span>. </span>Nitrogen<span> accounts for 78% of the atmosphere,</span>oxygen<span> 21% and </span>argon<span> 0.9%. Gases like </span>carbon dioxide<span>, nitrous oxides, </span><span>methane</span>
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Which of the following is NOT true regarding the sounds associated with the heart? Select one: a. The "lub-dub" sound originates
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B) The "lub-dub" sound originates from blood turbulence through the heart.

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