Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
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Question: Question: What are most stis caused by? Answer: bacteria

Answer: Many STIs are caused by bacteria. Some of the most common bacterial STIs are chlamydia, gonorrhea, and syphilis. Bacterial STIs can be cured with antibiotics.

Question: Question: Long distance runners try to maintain constant velocity with very little acceleration or deceleration to conserve what? Answer: energy

Answer: Long distance runners try to maintain constant velocity with very little acceleration or deceleration to conserve energy.

Question: Question: What is the simplest form of matter that has a unique set of properties? Answer: element

Answer:
An element is the simplest form of matter that has a unique set of properties.