A growing population adversely affects the environment through one of the main mechanisms ed d out of Ocal extraction of resources and occupation of space question O b. None of the statements are true O c. Occupation of space O d. extraction of resources on 9 Most environmental goods and services not traded in the market have the following et valuation methods Fred ed out of O a. revealed preference methods and stated preference methods ag question b. revealed preference methods and used value methods c. stated preference methods and used value methods O d. choice preference methods and stated preference methods