What percentage of the Earth's surface is covered by liquid water?
Answer
About $71$ percent
Liquid water is a defining characteristic of Earth, covering approximately $71$ percent of its surface, while the remaining $29$ percent constitutes the landmasses.

Related Questions
What is Earth's specific orbital position when counted outward from the Sun?What is the scientific classification given to Earth's physical form?How does Earth rank in density compared to other planets in the solar system?What is the primary gas component constituting about $78$ percent of Earth's atmosphere?What is the approximate duration required for Earth to complete one full revolution around the Sun?What causes the distinct seasonal shifts experienced across the globe?Which layer of Earth's interior structure is characterized by being liquid and generating the planet's magnetosphere?What percentage of the Earth's surface is covered by liquid water?How thick is the Earth's crust generally beneath the oceans?What process is driven by the slow convection currents within the mantle?