Describe the Mohs hardness scale and list, in increasing order of hardness, the minerals of the Mohs
hardness scale. What will be an ideal response?
The Mohs hardness scale measures a mineral's resistance to abrasion and is controlled mostly by its
internal structure. The minerals of the scale from softest to hardest are: talc, gypsum, calcite, fluorite,
apatite, orthoclase/feldspar, quartz, topaz, corundum, and diamond.
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Thick salt deposits have been explained by evaporation in silled (also called “barred”) basins. Indicate whether the statement is true or false
Continental crust is always thicker than oceanic crust. Indicate whether the statement is true or false
Radiosondes
A) are launched only in industrialized countries. B) make observations only at certain time intervals. C) provide information for the calculation of dew points. D) cannot be accurately tracked once launched.
What is the limiting factor that produces specialized adaptations in plants and animals of the desert?
A. light B. moisture C. temperature D. reproductive success E. migration