From this cross section of the Grand Canyon, what are the oldest rocks or structures?
A. Mesozoic sedimentary rocks
B. Hurricane Fault and faults along the Grand Wash Cliffs
C. Late Cenozoic basalts
D. Precambrian metamorphic rocks and granite
E. Precambrian sedimentary and igneous rocks
Answer: D
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A) All of the species that use the same resources B) All the humans living in a certain area C) All the plants, animals, and other organisms interacting in a specific area D) Different species of the same type of animal within a specific area
How many protons are required for the conversion of ADP to ATP?
A) 1 B) 2 C) 3 D) 4
Which plankton group are the most productive photosynthetic organisms (apart from cyanobacteria)?
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Coal-burning power plants are an important source of radon-222 gas.?
Answer the following statement true (T) or false (F)