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8 The diagram shows the human gut. Which numberedstructures secrete digestive enzymes?Oesophagus(food pipe)543(a) 1, 2, 3 and 4(c) 2, 3, 4 and 5(b) 1, 2, 3 and 6(d) 2, 3, 5 and 6 |
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Answer» Answer: A galaxy is a huge collection of gas, dust, and billions of stars and their solar SYSTEMS. A galaxy is held TOGETHER by gravity. Our galaxy, the Milky Way, also has a supermassive black HOLE in the MIDDLE. ... Some scientists think there could be as many as ONE hundred billion galaxies in the universe. ................. hope it helps uh! |
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