What two types of powers does congress have under article i, section 8 of the u. s. constitution?

Who ever answer first get ! question 1: which term names the outer edge all around a watershed? a. divide b. basin c. boundary d. collection area question 2: which feature does contour line indicate on a topographic map? a. the path of a river through the watershed b.equal elevation c. similar runoff level d. the boundary of an aquifer