World War 2 occurred in the late 40's, so this is most likely why there is a dip in that age group.
Answer:
Answer for picture
Coal and Natural Gas
Answer for Opec Location
Vienna Austria (Middle East and Africa)
Explanation:
That is all I can find for Opec location
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Answer:
Gamma rays
Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies. Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation.
Answer:
The Shadow Zone Gets Smaller
Explanation:
