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.

[EX Q]: Question: Regulation of endocrine depends on the hypothalmus and what other gland? Answer: pituitary
[EX A]: 45.3 The hypothalamus and pituitary are central to endocrine regulation.

[EX Q]: Question: In which organ are bile acids made Answer: liver
[EX A]: Bile salts are bile acids that help to break down fat. Bile acids are made in the liver. When you eat a meal, bile is secreted into the intestine, where it breaks down the fats ( Figure below ).

[EX Q]: Question: What does the tires meeting the road cause when a car accelerates? Answer: friction
[EX A]:
A bowling ball rolls down a lane at a constant velocity. (e) A car accelerates down the road. There is friction between the tires and the road.