Sam's Believe It Or Not! Our Earth Part 3
Earth's Composition & Features Blue Planet: About 71% of Earth's surface is covered by water. Water's States: It's the only planet with water in liquid, solid, and gas forms. Core: The core is rich in iron (85-88%). Layers: Four main layers: crust, mantle (squishy!), outer core, inner core. Magnetic... Sign in to see full entry.