Gametes are produced in the essential reproductive organs called gonads, specifically the ovaries and _______.
The urinary system helps to maintain the proper pH (acid-base) balance of the
Digestive enzymes are substances that break down complex nutrients such as proteins into
d)simpler amino acids.
Kidneys secrete _______, which helps to regulate blood pressure.
The reproductive organs of both sexes are designed to produce and permit fertilization of the germ or “seed” cells called