In geography, contours refer to contour lines, which are lines drawn on a map to represent areas of equal elevation above a given level, usually sea level. These lines help to depict the shape and elevation of the land surface on a two-dimensional map. Contour lines are crucial in topographic maps used for urban...

  Evolution of humans The evolution of humans on Earth is a complex and fascinating process that spans millions of years. Here is a brief overview of the key stages in human evolution: 1. The emergence of primates The evolution of humans can be traced back to the emergence of primates, which occurred around 60 million...