What semen-producing glands are found on the posterior surface of the urinary bladder?

Which of the following explains why a tree is often used as a model to represent the principle of common descent

Compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.

Which of the following would most directly interfere with sperm production? ingestion of a substance that mimicked inhibin interruption of sustentocytes' production of abp low sperm count use of synthetic steroids (testosterone)