Which of the following statements is TRUE? A.
Testosterone is the only male sex hormone.
OB.
Male sex hormones are called androgens.
O C.
Male sex hormones are called steroids.
OD.
All of the above

What re the two main phrases of the cell cycle.

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

What is the primary goal of human communities?