Here are some facts about Earth:

Life support

Earth is the only planet in our solar system that supports life. 

Composition

Earth is a rocky planet with a solid surface and oceans covering 70% of its surface. 

Atmosphere

Earth's atmosphere is made up of 78% nitrogen, 21% oxygen, and 1% other gases. It protects us from harmful radiation from the sun and meteoroids. 

Movement

Earth is constantly moving, rotating on its axis and revolving around the sun. Earth's tilt on its axis causes seasons. 

Climate

Earth has five main climates, including tropical and polar. Tropical climates are hot and humid and occur near the equator, while polar climates are cold and icy and occur around the poles. 

Moon

Earth has one moon that orbits Earth at a distance of 384,400 km. The moon's gravity causes tides and gradually slows Earth's rotation. 

Layers

Earth has layers like the crust, mantle, outer core, and inner core. The continental crust covers about 70% of Earth's surface, while the oceanic crust covers the remaining 30%. 

Formation

Earth formed 4.5 billion years ago from gas and dust in the early Solar System. 

Humans

Humans emerged in Africa 300,000 years ago and have spread across every continent on Earth.