Can someone please helpp?

Can someone me choose a broad topic and area of focus i am really doing this as a tally to see which one most people pick ok water pollution global warming endangered species atmosphere for the !

Which of the following best describes the circumstance under which countries block the importation of certain products into their country? a. importation blockade b.trade barrier c.trade inhibitor d. domestic protection act

Using plate tectonics and elastic rebound theory, describe why juan de fuca plate subduction produces so few earthquakes. what will happen in the future?