Iron,calcium,and Carbon Are ________

Q64: Which of the following substances has a

Q65: The bladder and kidneys are organs of

Q66: A scientist discovers a new chemical in

Q67: An _ is a body structure composed

Q68: Avi's salivary glands do not secrete amylase.As

Q70: _ is a mineral nutrient.<br>A)Carbon<br>B)Hydrogen<br>C)Iron<br>D)Nitrogen

Q71: The atoms of a compound,such as sugar,are

Q72: Chyme is the _.<br>A)organelle that maintains fluid

Q73: Coretta has severe chronic gastroesophageal reflux disease

Q74: The primary function of the cardiovascular system