Scientists regularly come up with new ideas about ourselves and the universe around us. These educated guesses are called hypotheses. If the hypothesis is tested over and over and is not disproven, it mwill eventually reach a point where it is called a "theory". And if scientific research subsequently finds that the theory explains the causes of countless phenomena, accurately predicts future events, and gains even more respect, it may finally be referred to as a "law". True
False

Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas