Given a scientific passage and an answer, generate a question for the given answer.

[EX Q]: Passage: Water is the main ingredient of many solutions. A solution is a mixture of two or more substances that has the same composition throughout. Some solutions are acids and some are bases. To understand acids and bases, you need to know more about pure water. In pure water (such as distilled water), a tiny fraction of water molecules naturally breaks down to form ions. An ion is an electrically charged atom or molecule. The breakdown of water is represented by the chemical equation. Answer: solution
[EX A]: What is the term for a mixture of two or more substances that has the same composition throughout?

[EX Q]: Passage: Bacteria are responsible for many types of diseases in humans. Answer: diseases
[EX A]: Bacteria are responsible for many types of what in humans?

[EX Q]: Passage: Sperm are released from the body during ejaculation . Ejaculation occurs when muscle contractions propel sperm from the epididymis. The sperm are forced through the ducts and out of the body through the urethra. As sperm travel through the ducts, they mix with fluids from the glands to form semen. Hundreds of millions of sperm are released with each ejaculation. Answer: sperm
[EX A]:
What is released from the body during ejaculation?