Demand curve is the ratio of demand (of whatever) to its price. It indicates the inverse relationship of what's demanded and the price
The Black Sea is a main body of water separating Europe and Asia.
Answer:
Definitions. Land use (direct). The purpose for which an area of land is used by humans: e.g. cropland, urban settlements, forests. Wild or natural land, by contrast, is that not used by humans. Land use (indirect).
I'm pretty sure they are talking about the revolution of the moon orbiting the Earth. (Which is going counterclockwise) I'm not 100% sure though.
