They're covered by sedimentary rock .
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Deserts are A) dry with little organic matter. Although it seems that D might be correct in fact it is not because desert soil is not totally unable to support plant life because in fact some plants grow in the desert and especially following a rain storm the desert can bloom with plant life.
C) The number of Bears with decrease.
The contaminated fish with cause the bears to be contaminated and die.
Answer:
It's an Angular Unconformity.
Explanation:
