Water Nuggets Practice Exam 2026 - Free Practice Questions and Study Guide

The Earth's surface is covered by approximately 71% water, primarily found in oceans, lakes, rivers, and glaciers. This significant portion of water is vital for sustaining life, regulating climate, and facilitating various ecological processes. The high percentage highlights the dominance of aquatic environments on our planet and underscores the importance of water conservation and management in relation to global health and sustainability.