Could your state pass a law setting requirements for becoming a citizen of the united states? explain

Which two statements are true about a system? 1. a system is a group of objects analyzed as one unit. 2. energy that moves across system boundaries is conserved. 3. there’s only one way to define the boundaries of a system. 4. all systems are made by humans.

Paint should be stored and mixed in an osha-approved room with all of the following, except: a) adequate ventilation b) ventilation hoods c) unshielded electrical devices d) fire extinguishers

If i got an 1040 on my psat, what are the chances of being able to get a 1400 on the sat. and are there any recommended ways to study.