Ishaan

1. What Earth Is

Earth is the third planet from the Sun, the only known world with liquid water on its surface and life in incredible diversity.

2. Basic Facts

• Age: ~4.54 billion years

• Diameter: ~12,742 km

• Surface: ~70% ocean, ~30% land

• Atmosphere: Mostly nitrogen (78%) and oxygen (21%)

• Population: Over 8 billion humans

3. Major Components of “The Whole Earth”

Continents

• Africa

• Asia

• Europe

• South America

• Australia

• Antarctica