https://padlet.com/cooper_petersen/lq5oxo0164 en-us 2017-12-18 15:25:54 UTC 2017-12-18 15:50:47 UTC hello@padlet.com cooper_petersen https://padlet.com/cooper_petersen/lq5oxo0164/wish/216983197 Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams.]]> 2017-12-18 15:29:30 UTC https://padlet.com/cooper_petersen/lq5oxo0164/wish/216983197 cooper_petersen https://padlet.com/cooper_petersen/lq5oxo0164/wish/216983639 Petroleum is a naturally occurring, yellow-to-black liquid found in geological formations beneath the Earth's surface. It is commonly refined into various types of fuels.]]> 2017-12-18 15:30:33 UTC https://padlet.com/cooper_petersen/lq5oxo0164/wish/216983639 cooper_petersen https://padlet.com/cooper_petersen/lq5oxo0164/wish/216984833 relating to or determined by the sun.]]> 2017-12-18 15:33:31 UTC https://padlet.com/cooper_petersen/lq5oxo0164/wish/216984833