Which are the most common minerals?
A. Sulfides
B. Silicates
C. Carbonates
D. Sulfates
Answer: B
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The oldest well-documented stromatolites occur in the ____
A)Hadean B)Archean C)Paleoproterozoic D)Mesoproterozoic E)Neoproterozoic
Which of the following correctly describe ionization energies?
A) Ionization energies are always positive, the process is always endothermic. B) Ionization energies generally increases as we go from top to bottom within a column of the periodic table. C) both a and b D) neither a nor b
Precipitation associated with a cold front is usually more intense and shorter in duration than precipitation generated by a warm front
Indicate whether the statement is true or false
Bats are the only reptiles presently capable of flight. Indicate whether the statement is true or false