The line where the Earth rotates is called the equator. Positioned at 0 degrees latitude, the equator divides the Earth into the Northern and Southern Hemispheres. This imaginary line is significant for various reasons, including its role in determining climate zones, daylight patterns, and biodiversity. Regions near the equator experience consistently warm temperatures throughout the year, leading to the growth of lush tropical rainforests and diverse ecosystems. The equator also plays a crucial role in navigation, geography, and cultural studies, as various countries and civilizations have developed along this line. It serves as a fundamental reference point for global positioning.