Which fossil fuel generally contains the greatest concentrations of pollution-causing contaminants?
A) Uranium B) Natural gas C) Oil D) Coal
D
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What may have prevented the use of bioplastics in the past century?
A. The technology for mass production of bioplastics was not yet available. B. The materials needed for bioplastics was used for food. C. Bioplastics were viewed as inferior materials. D. Oil became widely available and petrochemical plastics took over the market. E. Synthetic plastic producers had a strong government lobby.
The common language for communication among various states in India is
A. English B. French C. Portuguese D. Spanish
Many countries in central African are land locked; List some of these countries
A sandstone with more than 25% sand-sized feldspar is an arkose.
Answer the following statement true (T) or false (F)