Galileo discovered four of Jupiter's moons. They are Io, Europa, Callisto, and , which is the largest moon in the solar system. A. Titan B. Triton C. Phobos D. Ganymede

D. Ganymede

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the answer is a

photosynthesis

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.