Do You Know...Your Earth - Part 1?

Do you know that the Earth is more than 4.5 billion years old?

Editor's note: Of all known forms of animals life ever to inhabit the Earth, only about 10 percent still exist today.

Do you know that the Amazon rainforest produces more than 20% the world's oxygen supply?

Editor's note: The oxygen produced by the Amazon rainforest contributes to the oxygen in the atmosphere that makes up 21% of the air.

Do you know that there are more than 50,000 earthquakes throughout the world every year?

Editor's note: An earthquake in 1811 caused parts of the Mississippi River to flow backwards.

Do you know that the Sun contains 99.8% of the total mass of the solar system?

Editor's note: All the coal, oil, gas, and wood on Earth would only keep the Sun burning for a few days.

Do you know that approximately 70% of the Earth is covered with water?

Editor's note: The Pacific Ocean covers 28% of the Earth's surface. Also, the Atlantic Ocean is saltier than the Pacific Ocean.

Do you know that the world's highest capital is La Paz, which is the capital of Bolivia? The city is situated at about 3,650 m above sea-level and it is built on steep hills.

Editor's note: Finland is also known as "the land of of the thousand lakes". There are 187,888 lakes in total. While most of these lakes are considered small, there are 309 of them that are larger than 10 km².

Do you know that of the twenty-five highest mountains on Earth, nineteen are in the Himalayas?

Editor's note: The deepest point on the Earth's surface is in the Pacific Ocean located in the Mariana Trench.

Editor's note: Compare the depth of the Mariana Trench with Mount Everest, the highest mountain in the Himalayas.