What role would each play in the creation of a map: gps, gis, and aerial imagery

Alow pressure system is formed when an air mass cools over a cool surface and sinks. true or false

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .

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.