"The Blue Planet" is a nickname for Earth, highlighting its appearance from space. The planet is covered by about 71% water, which gives it a blue hue when viewed from afar. This vast amount of water is essential for supporting life and regulating the climate. Earth is home to diverse ecosystems, including forests, deserts, and oceans. The presence of marine life in the oceans and terrestrial species on land contributes to the planet's rich biodiversity. The atmosphere, composed mainly of nitrogen and oxygen, protects life and helps maintain temperatures suitable for living organisms.