HW #3 1) Write a conclusion in which you compare the different protocols and conventions, showing the most effective ones, and ending with the current global situation in regards of ODS use. 3) You are asked to evaluate the public perception toward a certain environmental issue of your interest through preparing a questionnaire. The questionnaire should be targeted to a certain group of people of your choice; high school students, ME students on Campus... etc. The data should be analyzed and the results should be reported clearly. 4) During 1990-1993 the production of CFC-11 dropped, averaging only 1.9 x 1011 g/ year over these four years. By the beginning of 1994, emissions were sufficiently low to be neglected. Write the expression for C (t) over the entire range 1990-2050. For consistency with the notation in Example 11.9, let C3 (t) be the concentration between 1990 and 1993, and let C4 (t) be the concentration after beginning of 1994. Assume t = 0 corresponds to 1960