Select all that apply. what do economic systems seek to do? provide basic care to citizens countries respond to the issue of scarcity protect industry from competition answer the three key economic questions

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How can one make a supersaturated solution? (apex)

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397