Describe how soil formation can result in an economically significant mineral deposit
What will be an ideal response?
The high temperatures and abundant rainfall in a tropical rainforest results in intense chemical weathering which leaches most of the nutrients from the soil, leaving behind a residue of iron and aluminum oxides and hydroxides. The most significant mineral deposits formed in this fashion contain the aluminum hydroxide mineral called bauxite.
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During the past 130 years global temperatures [INSERT FIGURE 3-32. INCLUDE CAPTION]
A) have increased consistently B) have remained fairly constant C) have experienced periods of both cooling and warming D) have fluctuated wildly from year to year
Only water-soluble toxins can accumulate in body tissues and cells
Indicate whether the statement is true or false
A map of population density for the European region is perhaps best understood in comparison to proximity to water, as settlements have historically developed around coastal areas and along major rivers, which were primary sources of transportation
Indicate whether the statement is true or false
Surface waves are useful for investigating Earth's interior because they
A. reflect at the boundaries between Earth's layers. B. cast shadows indicating Earth's layers. C. refract at the boundaries between Earth's layers. D. none of the above