Mixtures of metals are called
alloys
This question requires at least
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answer; i believe that the correct answer is (c) explore the outer planets; / plz check good luck

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.