71% of the Earth's surface is made up of

The answer is water because water covers approximately 71% of the Earth's surface. This includes oceans, seas, lakes, rivers, and other bodies of water. Water is essential for life as we know it, supporting various ecosystems, providing habitats for numerous species, and playing a crucial role in various Earth processes such as rainfall, evaporation, and the water cycle. Its vast presence on Earth makes it a significant element in shaping our planet's climate, weather patterns, and overall sustainability.