Cloze-ing in on science. Instructions: Use the words in the box to fill in the blanks based on what you have learned about the characteristics of the solar system. Words may be used more than once or not at all. Word Bank: carbon water Venus Mars Mercury Io moon Saturn sodium carbonate Callisto planet Cloze 1 One compound we can not do without in life as we know it is . It definitely exists on Earth. and there is evidence the liquid form has existed on other solar bodies. such as the planet. There is also evidence for the existence of ice on at least one other , our , and moons of other planets. This evidence comes from photos from satellite fly-bys.