Between two natural maps of Vietnam with scale 1: 10000000 and 1: 15000000, which map has a larger scale, which map shows more geographical objects?

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.

Fertility and mortality rates are higher in more developed nations.

The creation of the european union has had all of the following effects except