Which of the following represents a tragedy of the commons?Plastic trash in the neighborhood parkTwo hospitals for the town's residentsTrash pile in a person's backyardNot enough fruit at a local market

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Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

What is the difference between a scientific hypotheses and a scientific theory?