Looking for a bestie that's a guy no offense to girls

Ships can transit between the atlantic and pacific oceans using the canal.

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.

The blue segment below is a diameter of oo. what is the length of the radius of the circle?