What was the significance of their results? A. Miller and Urey showed that inorganic compounds could combine
to form the building blocks of living cells.
B. Miller and Urey showed that lightning was necessary for life to
form on Earth.
C. Miller and Urey showed that spontaneous generation was
possible.
D. Miller and Urey showed that all life evolved from a single common
ancestor.

Select the correct answer from each drop-down menu. which phase of mitotic division is the highlighted cell undergoing? the cell is undergoing , which is the stage before .

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

Apopulation follows a period of decline; overshoot increase; overshoot increase; scarcity scarcity; dieback