Which of the following would not be considered a state (in geography terms as we have learned in this unit)?
a) South Carolina
b) Mexico
c) Russia
d) Denmark

All of these are describing which feature? located in north central asiastretches from the atlantic ocean to the red sea borders the sahara desert

People keep spending additional units of a particular resource on a want until their marginal benefit is  decreasing withgreater thanless thannot affected by  their marginal cost.

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.