The respiratory system is responsible for breathing which is the process of sucking the air around us and exhaling the carbon dioxide. As we all know, we must do this constantly to be able to live.
As you already know, the Sun is a star, one of the many stars that form the Milky Way, though for us, it is the most important shining star in the sky. The Sun, as well as all the other asteroids which revolve around it, make up the solar system.
The moon is the only satellite which rotates around our planet and it takes 28 days to completely go around the Earth. It has a rotation and a revolution movement, just like the Earth.
So that our body can make the most of the food we eat, it must first transform it into a simpler substance called nutrients. This food transformation process is called digestion and is done by the digestive system.
The Earth is the third planet from the Sun. Like other planets in the solar system, the Earth moves in two different ways: one is called rotation and the other is called revolution.
The stars are huge gas spheres that shine in the darkness of space. During clear nights we can see thousand of stars in the sky. All stars, along with the rest of the celestial bodies found in the sky are part of the Universe.
The Earth, which is the planet we live on, is known as the Blue planet because as much as 3/4 of the its surface is water! And water is so very important because without it, there would be no life.
There are many different theories on how the universe started but the most known is the Big Bang theory, or in other words, the great explosion. This explosion occurred about 10 or 20 billion of years ago when absolutely nothing existed.
The heart is the muscle that works the most in our whole body. The human body is FASCINATING and there’s noting more important than the human heart… so let’s get to know a little more about it!
