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

Passage: The third conservation law is conservation of angular momentum. This vector quantity is the product of rotational velocity and rotational inertia. In any closed system (including the universe) the quantity of angular momentum is fixed. Angular momentum can be transferred from one body to another, but cannot be lost or gained. If a system has its angular momentum changed from the outside it is caused by a torque. Torque is a force applied at a distance from the center of rotation. Answer: third conservation law
Output:
Which of newton's laws states that the quantity of angular momentum in a closed system is fixed?