Answer:
The outer planets — Jupiter, Saturn, Uranus, and Neptune are made up of: <em><u> </u></em><em><u>h</u></em><em><u>ydrogen</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>helium</u></em><em><u> </u></em>
<em>Answer:-</em>
<em>Working slowly over many years, ground water travels along small cracks. The water dissolves and carries away the solid rock gradually enlarging the cracks, eventually forming a cave. Ground water carries the dissolved minerals in solution. The minerals may then be deposited, for example, as stalagmites or stalactites.</em>
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