Which physical feature was once covered by the sea? options: tallulah gorge stone mountain the okefenokee swamp the appalachian mountains

I'm so close to finishing all these.

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g