Which statements accurately describe the atmospheres of the inner planets? Check all that apply.
Mars has no atmosphere.
Mercury has no atmosphere.
Mars and Venus have similar atmospheres.
Earth and Venus have similar atmospheres.
Venus's atmosphere is thick and contains clouds of sulfuric acid.

Relatively steep zone that is compared with the shelf that marks the boundary between continental crust and ocean crust.

Why are fossils of organism's from the phanerozoic eon much more likely to be found than fossils of organisms from any other eon? a. more organisms present during the phanerozoic eon had soft body parts. b. organisms present during the phanerozoic eon were all microscopic. c. more organisms present during the phanerozoic eon had hard body parts. d. organisms present during the phanerozoic eon are the most ancient life forms.

Gemstones are commonly found in pegmatites, which are igneous rocks that are a. exceptionally mafic b. exceptionally coarse grained c. exceptionally fine grained d. extrusive, forming from lava