Draw a sketch of a hot air balloon and of a helium balloon. define the systems by
identifying the system boundaries. show inputs and outputs of matter and energy in each.

Which sentence from holes contains an implied personality trait? stanley and his parents had tried to pretend that he was just going away to camp for a while, just like rich kids do. he'd just been in the wrong place at the wrong time. stanley felt somewhat dazed as the guard unlocked his handcuffs and led him off the bus. stanley nodded to show he understood