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The table of contents is usually found
Oxygen
A chemical element (O) that is a highly reactive nonmetal, essential for most forms of life on Earth, and a key component of the atmosphere.
Carbon Dioxide
A colorless, odorless gas produced by burning carbon and organic compounds and by respiration, absorbed by plants in photosynthesis.
Carbonic Acid
A weak acid formed in solution when carbon dioxide reacts with water (H2CO3).
Blood PH
Blood pH is a measure of the acidity or alkalinity of blood, with a normal range for human blood typically being between 7.35 and 7.45, indicating a slightly alkaline condition.
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