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stepladder [879]
3 years ago
5

How much oxygen is contained in the atmosphere?

Biology
1 answer:
GrogVix [38]3 years ago
3 0
0B)21% that’s your answer
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Aerobic metabolism of amino acid requires deamination

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Living system can be defined as the internal systems of organisms and how materials circulate within organisms.

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Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.

Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc., which are typically used for carrying out various bodily functions such as respiration, digestion, metabolism, etc.

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