Quick Answer. Blood serum is yellow. The red color of human blood comes from hemochrome, a pigment that transports oxygen throughout the bloodstream. Blood's liquid nature, however, comes from the serum. According to About.com's Regina Bailey, plasma makes up 55 percent of human blood by volume.
Geography (from Greek Î³ÎµÏÎ³ÏÎ±ÏÎ¯Î±, geographia, lit. earth description) is a field study of the lands, the features, the inhabitants, and the phenomena of Earth. A literal translation would be to describe or picture or write about the earth.The first person to use the word geography was Eratosthenes (276â194 BC).eography has been called the world discipline and the bridge between the human and the physical science . Geography is divided into two main branches: human geography and physical geography.
Location is connected to both physical geography and human geography. There are two ways to describe locations in geography: relative locations and absolute locations.This lesson describes these different types of location and the difference between the two.