White blood cells, and they are <span>neutrophils, bands, eosinophils, basophils, monocytes and lymphocytes and they all act in specific areas of defenses for the body systems.</span>
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not sure how to answer number 5
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The tiny filtering units in the kidney are the nephrons
Measure of gravitational attraction or force or gravity pulling one object toward the center of another object. ... The force that pulls on objects and causes acceleration if the objects are not balanced by an opposing force.