Which organization in the united states studies and assess the enviroment to protect it and the people affected by any negative change in the enviroment?

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

question 1: paragraph 3

question 2: paragraph 2

question 3: paragraph 1

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