Select all the correct answerswhicho statements are true about a system? a system is a group of objects analyzed as one unitenergy that moves across system boundaries is conservedthere's only one way to define the boundaries of a systemall systems are made by humans

Hello!

The correct answer is A. A system is a group of objects analyzed as one unit.

We know this because all systems are NOT made by humans, there are numerous ways to define the boundaries of one, and the energy is not necessarily conserved. The parts of a system are analyzed as being apart of that group, which makes A the only correct and rational answer.

I hope I helped! :)

the correct option is option a

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a