Empyhsema is the condition characterized by the destruction of the walls of the alveoli.
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The roles of the organelles within the cells need to be introduced and relate structure and location of organelles to their function. Cells differ in size, shape and structure and therefore carry out specialized functions.
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<em>Natural resources are materials from the Earth that are used to support life and meet people's needs... Examples - oil, coal, sand.. Etc</em>
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