The world is the planet Earth, which is the third planet from the Sun in our solar system. It is home to diverse ecosystems, including forests, deserts, oceans, and mountains. The Earth has a variety of climates and habitats that support millions of species of plants and animals. Human beings inhabit every continent, with over 7 billion people living in different cultures and societies. The world is divided into countries, each with its own government and laws. Major geographical features include the Himalayas, Amazon Rainforest, and Sahara Desert, which play significant roles in the planet's ecology and climate.