1. Carter sold 9 of his video games online. The next day, he sold 27 video games. He collected a total of $900. If he charged the same amount for... fghjmhgfdxsdfgh

How do oceanographers measure the salinity of ocean water?

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.

Which types of seismic waves travel through earths interior? select all that apply. a) l waves b) p waves c) s waves