4. promoting tissue growth in body cells
An inference is an assumption you can make about a character or setting that isn't DIRECTLY STATED.
Atmosphere, hydrosphere, lithosphere, and biosphere
Macrophages (histiocytes) - are phagocytes - these cells 'eat' particles such as bacteria. These cells are derived from white blood cells called monocytes (see the section on blood).
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B. The compass shows south is down & North is up the south wind will blow stronger up.