About 71% of the Earth's surface is covered by water, primarily in oceans.
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Geography
The Earth's surface is predominantly covered by oceans, which contain about 97% of all the planet's water. This vast expanse plays a crucial role in maintaining the global climate and supports diverse ecosystems. Despite the prevalence of water, only a small fraction is freshwater, which is essential for life on land. Understanding the distribution of Earth's water is vital for managing resources sustainably and addressing environmental challenges.
Source: nationalgeographic.com