When do males begin producing sperm?

An egg is released from an ovary about once per month in a process called ___.

Which of the following glands is found in the abdomen?

Identical twins result from ___.

Adolescence usually begins around age ___.

Which of the following glands is attached to the brain?

Which of the following is a sign of inflammation?

Which of these causes infectious diseases?

Which of the following is a noninfectious disease?

Which of the following is NOT a way to prevent cancer?

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