Which nontains sand ctive since early in the planet's geologic history tseal explanstion for why the venusian much more carbon dioxide than earthi's atnosphere? ucface temperatures are much lower than eanh's atmosphere a) venusian atmosphe n on vensn is common in orbits near the sun continue to bombard venus but miss on venus has been eart b) volcanism c) limestone deposition is common on earth but auen he planer, ha eah's d) carbon dioxide-rich, ley asteroids in orbits near the s earth. answer diff: 1 solar system probably formed from a giant cloud of gaves 36) theexpl and dispersed solid particles. a) protogalactic theory b) nebular hypothesis c) extrastellar solar hypothesis d) planetary compression theory answer diff: 1 37) meteorites are thought to be analogous in composit a) calcareous b) iron c) stony d) ammonical diff: 1 38) compared to earth's atmosphere, the atmosphere of mars has surface pressun those on earth; major gases are water vapor and carbon dioxide a) 3 times b) 0.1 times those on earth; major gases are water vapor and carbon dioxide half those on earth; main gases are methane and nitrogen imes those on earth; main gases are methane and nitrogen d) 1.5 t answer diff: 1 came closest to undergon 9) as the solar system was forming, becoming a second sun a) neptune b) earth c) jupiter d) saturn diff: 1