Most surely in the creation of the heavens and the earth and...
Most surely in the creation of the heavens and the earth and the alternation of the night and the day, and the ships that run in the sea with that which profit men, and the water that Allah sends down from the clouds, then gives life with it to the earth after its death and spreads in it all kinds of animals, and the changing of the winds and the clouds made subservient between the heavens and the earth, there are signs for a people who understand".
(2:163-164) Almost every discipline of science is covered in this shor t verse of the Holy Quran. It is true. Today, the existence of God is a common observation of all scientists working in different fields of science. How to prove the existence of God at school level ? Existence of God is so obvious and visible that it can be convincingly proved at all levels.
When your chemistry teacher tells you about the structure of atom, he teaches you that some tiny particles known as electrons, are revolving around the nucleus. You should ask him a simple question; Sir: Who has initiated the movement of electrons ? Because your physics teacher has taught you that, Isaac Newton in first law of motion says, that nothing can move unless someone makes it to move. So if electrons are moving in their respective orbits, then who has made them to move ?
Did any scientist tell you about any kind of force which has brought these electrons into motion? No, without any dispute everyone says "NO". Then, how the electrons started moving around the nucleus in their respective orbits? The answer of this question is nothing but what we teach you in Tawhid. "He is Allah. There is no god but Him". (20:8) Both physics and chemistry teach you that you can not explain the structure of atom and first law of motion completely without believing in Tawhid.
Thus every book of science and each discovery of the scientists teaches us, how great is our Lord Who has created every thing which exists in the universe. The human body is a marvelous creation of Allah Subhanahu taala. Every part of the body is divinely computerized to do a specific job. For instance, heart is a tireless, powerful muscle which works round the clock. It pumps 4.7 liters of blood throughout the body ever y minute. i.e., 7,600 liters of blood in one day.
Millions of pages are not enough to describe the amazing features of the body and its accessories. Thus, physics, chemistry and biology explicitly tell about the reality of God.