Detrital sedimentary rocks are classified according to clast size, whereas chemical sedimentary rocks are classified based on their dominant minerals
Indicate whether this statement is true or false.
Answer: TRUE
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The fall equinox in the Southern Hemisphere occurs on this date.
June 21 March 21 September 21 December 21
Many mountains are islands of biodiversity surrounded by a sea of lower-elevation landscapes transformed by human activities.
Answer the following statement true (T) or false (F)
The area shown on this cross section will experience subsidence from groundwater withdrawal. Which of the following statements is likely to be true about the subsidence?
A. The amount of subsidence will be constant across the area. B. The subsidence can be reversed (undone) by pumping in saltwater. C. The aquifer will regain its porosity once the water is replaced. D. None of these.
A perched lake is above the water table. If a perched lake is to remain permanent, then
A. the amount of inflow must be less than the amount of outflow and losses to evaporation. B. the water table must be raised. C. the amount of inflow of water must be equal to or greater than the amount of outflow and losses to evaporation.