Our ability to assign an age to geological and archaeological materials is based on our ability to measure the relative abundance of radioactive ________ and their stable decay products.
A. protons
B. isotopes
C. ions
D. fallout
E. neutrons
Answer: B
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If you have one molecule of TiO2, how many molecules of O2 does it contain?
A. Three, TiO2 contains three molecules. B. Two, TiO2 is a mixture of Ti and 2 O. C. One, TiO2 is a mixture of Ti and O2. D. None, O2 is a different molecule than TiO2. E. none of the above
Computer models for the time between 1900 and 1970 can explain warming:
A) mostly natural causes B) mostly man-made causes C) there was no warming in that time frame D) both man-made and natural causes were equally important
What geographic factors explain the locations of early industry in Europe (Industrial Revolution)?
What will be an ideal response?
Which of the following is true of acetate salts and nitrate salts?
A) All acetate salts are soluble but all nitrate salts are insoluble. B) All nitrate salts are soluble but all acetate salts are insoluble. C) All acetate salts and all nitrate salts are soluble. D) All acetate salts and all nitrate salts are insoluble.