Minerals are naturally occurring inorganic solids that possesses an orderly internal structure and a definite chemical composition. This orderly internal structure or regular pattern is called its A) hardness. B) cleavage furrow. C) specific gravity. D) crystal structure. @drewbush63 @cooldude12
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idk but i think it is D. crystal structure.
____________________ helps explain why there are a large number of marsupial mammal species in Australia and South America, two continents that were once connected. A) Ozone production B) Continental drift C) The fifth mass extinction D) The first mass extinction @drewbush63
i think C. The fifth mass extinction
Igneous rock is formed by the cooling and solidification of molten Earth materials. Igneous rock forms when magma or lava cools. If igneous rock forms above ground after a volcanic eruption, it ________________ forming ____________ igneous rock, such as obsidian which is a naturally occurring volcanic glass. A) cools quickly, extrusive Eliminate B) cools quickly, intrusive C) cools slowly, extrusive D) cools slowly, intrusive @drewbush63
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