10 interesting things about the world we live in ! #6

Hello friends I wish you a great Monday to evreybody! I chose for you another 10 couriosiries as follow.

Tiny pieces of space debris that collided with the Earth it makes it heavier with 90.7 tons every day.
The Amazon rainforest produces about 20 percent of the Earth's oxygen.
Earth has a diameter of 12,756 km.
The average surface temperature of the Earth is 7.7 ° C.
At one point, exploring for oil, people caused an earthquake of 5.5 on the Richter scale.
The Earth's core is made of solid metal, surrounded by liquid metal.
The Earth is moving at a speed of almost 107,300 km / h around the Sun.
An object of the Mars size collided with Earth more than four billion years ago, breaking a piece of the planet that later became the moon.
It takes three days to fly from Earth to Moon.
Our planet is covered 70% with water. However, people explored only 5% of this area