Sedimentary rocks made up of alternating thin layers of chert and iron minerals, mostly the iron
oxides hematite and magnetite; these deposits are ore minerals from which iron is extracted:a.
banded iron formations (BIFs) d. evaporites
b. limestones e. blue-green algae
c. sand dunes
A
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Because S-waves do not travel through Earth's outer core, scientists inferred that the outer core is
A. solid. B. molten liquid. C. very dense. D. impenetrable.
Which ranges for incoming light and UV radiation would be absorbed and scattered the most?
A) 0.2?0.3 microns B) 0.3?0.4 microns C) 0.4?0.5 microns D) 0.5?0.7 microns
An object that we see as red ____ all visible radiation except red
A) refracts B) absorbs C) reflects D) diffracts
In North America, ski resorts are typically built on the north slopes of mountains
Indicate whether the statement is true or false