23.2.3 the air resource. The air is classified as a natural resource that does not have an end date, and as a resource that is essential for living organisms of all kinds. The air contains a mixture of several different kinds of matter. Mainly in the gas, such as nitrogen, carbon dioxide, oxygen status and experience as a minority in a State that is a liquid, such as water vapour and solid state, such as dirt, dust, etc.
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