What cells join together to cause conception ?

Aperson who doesn't have enough calcium in his or her diet is at risk for developing bones that are weak and break easily. this condition is known as  a.  osteoporosis.    b.  crohn's disease.    c.  celiac disease.    d.  hemophilia.

What creates an electric force field that moves electrons through a circuit? a. energy sourceb. loadc. metal wiresd. resistance

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