What are some observable properties of solids, liquids, and gases

Sam and ben have discovered some strange animals living in the woods behind their house. ben is excited because he believes they are marsupials, an animal he's never observed in the wild before. his brother is sure it is not. what feature should the boys consider in deciding whether the animals are marsupials?

What would a student most likely use if he or she wanted to consult a secondary source

Opinion polls reveal that many people believe that the military buildup of the 1980s came at the expense of pressing domestic problems such as environmental pollution and deteriorating educational and transportation infrastructure. in short, people are becoming aware of