ENVS 1126 test 1 LSU Exam Questions with Correct Answers

ENVS 1126 test 1 LSU Exam Questions with Correct Answers Which one of the following is not one of the three main trophic categories? a. transformer The ecological efficiency in a food chain is 15%. A pollutant (X) is transferred from one trophic level to the next with an efficiency of 30%. The concentration of X on trophic level 2 is 4 ppm. What is the concentration of X on trophic level 4? d. 16 The Montreal Protocol was an international agreement to phase out the production of Chlorofluorocarbons The three crops that account for about 50% of global food demands are a. b. rice, wheat, and corn The cost/benefit ratio associated with the implementation of environmental regulations increases with time