PLEASE HELP PLEASE HELP PLEASE HELP PLEASE What causes the phases of the moon? (Select two.)
A. The Moon is illuminated on one side by the Sun.
B. Earth casts a shadow on the Moon.
C. The Moon's position relative to Earth results in phases.
D. The Moon changes shape as it moves around Earth.

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

Fill in the blank with the correct sphere label. a: ⇒ geosphere b: ⇒ biosphere c: ⇒ hydrosphere

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