The ghost ant is associated with a complex of ant species known as tramp ants that is widely distributed in tropical and subtropical latitudes worldwide. In fact, Tapinoma melanocephalum was once referred to simply as the tramp ant..
Macroeconomics (from the Greek prefix makro- meaning large and economics) is a branch of economics dealing with the performance, structure, behavior, and decision-making of an economy as a whole. This includes national, regional, and global economies.
Finance & Development. G. Chris Rodrigo. Economics is split between analysis of how the overall economy works and how single markets function. A question of scale (photo: Zack Seckler/Corbis). Physicists look at the big world of planets, stars, galaxies, and gravity. But they also study the minute world of atoms and the tiny particles that comprise those atoms. Economists also look at two realms. There is big-picture macroeconomics, which is concerned with how the overall economy works.