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.

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What does the cyclopes invite odysseus back to the island

Students who utilize the" read, underline and eliminate" strategy are more likely to get better test grades. why do you think this is so