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Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.
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Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine
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List the 6 steps in the food Flow system:...
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