"استوائی" refers to the equatorial region of the Earth, which is located around the equator. This area is characterized by a warm climate, high humidity, and abundant rainfall throughout the year. The equatorial zone is home to diverse ecosystems, including lush rainforests, which support a wide variety of plant and animal species. The equator divides the Earth into the Northern Hemisphere and the Southern Hemisphere. Countries that lie along the equator, such as Ecuador, Brazil, and Indonesia, experience little variation in temperature and daylight hours, making them unique in terms of climate and biodiversity.