The African gazelle and the North American buffalo both live in grasslands, eat grass, and serve as prey to large predators. Their young are born one at a time and are often nursed for up to a year. Though they live in different ecosystems, the gazelle and the buffalo have the same

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