Please reply in 250 words We use what we know about Earth, its structure, atmosphere, geologicactivities, and processes to prove or disprove our theories of otherplanets. For example, we used Google Earth in Week Four’s lab to examinerivers on Earth, and then will apply what we know of Earth’s rivers toexplore evidence for past rivers on Mars in this week’s lab. Describeone other such example of our usage of Earth analogs to determine thecircumstances elsewhere and how it might influence our extraplanetaryexplorations in the future. And for the last time this term, don’tchoose one that has already been posted.