Question

select all the correct answers. which two statements are true about a system? a system is a group of objects analyzed as one unit. energy that moves across system boundaries is conserved. theres only one way to define the boundaries of a system. all systems are made by humans.

Explanation:

A system is indeed a group of objects analyzed as one unit. Energy can cross system boundaries and is not always conserved within a non - isolated system. There are multiple ways to define system boundaries and not all systems are made by humans (e.g., natural systems).

Answer:

A. A system is a group of objects analyzed as one unit.
C. Energy that moves across system boundaries is conserved.