The finely divided, red, brown, and yellow soil-coloring minerals originate by what process?
A) mechanical weathering of very fine-grained, blue-gray clays
B) mechanical weathering of the feldspars and micas in granite and rhyolite
C) chemical weathering of quartz and feldspars
D) precipitation of iron oxides during the chemical weathering process
D
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In alley cropping,
A. crops are planted between rows of trees or shrubs that are used for fruit or firewood. B. terraces are built to prevent swift water runoff. C. plowing runs across slopes. D. special tillers are used so the topsoil is not disturbed. E. a small series of dams are built.
Most comet orbits are shorter than most asteroids orbits.
Answer the following statement true (T) or false (F)
What type of reaction occurs when an acid reacts with an active metal?
A) double displacement B) neutralization C) precipitation D) redox
A sensor that measures the emitted radiation of an object is an example of passive remote sensing
Indicate whether the statement is true or false