Question

The universe could be considered an isolated system because

many people think that no energy or matter exists outside the universe

energy and matter are created in the universe and flow freely into and out of the universe

energy is created outside the universe and matter is created within the universe

energy is created in the universe and matter is transferred out of the universe

Answer 1

A(many people think that no energy or matter exists outside the universe)

Step-by-step explanation: