The concentration of atmospheric lead increased substantially during the 1990s
Indicate whether the statement is true or false
False
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Environmental groups have used ________ as an effective tool in making nations more compliant with environmental regulations.
A. Exposure to embarrass the country B. Trade sanctions C. World Trade Organization trade practices D. Reporting of violators to the international court E. None of these are effective in making nations more compliant with environmental regulations
Recent advances in the recovery and analysis of human genetics has begun to ?ll in the map of early human migration
Indicate whether the statement is true or false.
The trip through the Panama Canal from the Pacific Ocean to the Atlantic Ocean will take a little less than one:
A) half hour B) hour C) day D) year
Which of the following describes the typical composition of a ribosome?
A) 100% protein B) 100% rRNA C) 65% protein and 35% rRNA D) 65% rRNA and 35% protein