Awater and sand table is a good way for children to experiment with the concept of: a. accommodation b. egocentrism c. autonomy d. conservation

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.

Which of these is not related to the teeth? a. chymob. pulpc. enamold. dentin

Which of the following substances would you expect to find in the blood, and not in the lymph? selected answers: calcium glucose calcium glucose estrogen oxygen fatty acids water answers: