The existence of life and its continuation depend on a very delicate stability. If you are to think about it, there is only one single conclusion you can come up with: Whole living creatures and the world we live in are specially designed.

The first design that makes world a remarkable place is the carbon atom. The scientists concluded that there could be no organism without carbon. The reason is that all the other atoms in the organisms can only make bonds with the carbon atom. There is no other element like carbon because other elements cannot make infinite bonds with other atoms like carbon.
The well known scientist Micheal Denton says in his book named as Nature’s Destiny:

“Consequently if life is going to exist on any planet anywhere in the universe it is going to have to be carbon-based” (Michael Denton, Nature's Destiny, p 106)

Carbon molecules which are the building blocks of the organisms can survive between 120°C and -20°C. The only planet in the solar system that has the right temperature range for the carbon item to exist between millions of degrees to -273 °C is the earth.

For the temperature of the earth to be right and proper for life depends on many different conditions. One of them is the distance betwwen the earth and Sun.

In the magazine called “Science and Technique” (Bilim ve Teknik) the delicate precision of the distance is explained as such: “The earth has such an orbit while revolving around the sun that it only deviates 2.8mm in every 29 kilometers. There is no other deviation in the orbit of the earth. If the deviation was to be 3mm there would be great catastrophies; if the deviation was 2.5 in stead of 2.8 the orbit would be so wide that we would all frezee to death. If it was 3.1 mm we would all get fried.”

The heat that the stars radiate varies according to their size. If the sun had a bigger mass it would have a greater surface heat. In that case it would radiate fatal ultraviolate rays. On the contrary, only 10 % decrease in the amount of energy sourced from the Sun would cause the earth be surrounded with icebergs. A minute increase would fry all the living creatures.

The high revolving speed of the earth helps the balanced distribution of the heat. The importance of the balance is more perceptible when compared to Mercure where the temperature difference is more than 600 degrees between the night and the day.

The earth has an slope of 23 degrees 27 minutes. This prevents the intense heat between the equator and the poles. If it did not exist, the temperature difference between the poles and the equator would increase and there would be no atmosphere to live in.

Another factor effecting the heat of the earth is its size. Certainly it would not have the ideal temperature if it was as small as Mercury or as big as Jupiter.

If all the factors for the ideal temperature existed but only one of them was missing like a different axis, what would happen? The ideal balance of the other factors would not mean anything and our world would lose its rightness for life. Then who is making the necessary calculations for the world?

“It is He who made the earth submissive to you, so walk its broad trails and eat what it provides. The Resurrection is to Him.” (Al-Mulk, 15)

The inner core of the earth is solid and the outer core is liquid. The two layers of the core moves around eachother. This movement has a magnetic effect on the metals like iron and nickel in the core and causes a magnetic shield going along the atmosphere.

This shield known as Van Allen straps, stops the fatal cosmic rays and only permits 0.1 % to enter. If the world did not have such a magnetic shield, the life on the earth would be destroyed or would never exist.

The atmospheric belts have a selective permeablity: only allowing unharmful rays, radio waves and visible light. If it did not have this permeability we would not be able to use the communication waves or see the day light, which is the basis of the living world.

We made the sky a persevered and protected roof yet still they turn away from Our Signs. (Surat al-Anbiya: 32)

The world atmosphere is a mixture of variety of gases. If there was more oxygen in the atmosphere than it is now, combustion reactions would occur faster and rocks and metals would erode more quickly. The earth would be worn out and this would cause a big threat. If we had less oxygen, respiration would become harder and we would not have the ozone layer protecting us from harmful rays.

18.The British biochemist James Lovelock writes about the subject as : “The present oxygen level is at a point where risk and benefit nicely balance.”

19. The pressure of air is 760 mmHg and its density at sea level is one gram per liter. Its viscosity is 50 times more than water at the sea surface. These seemingly unimportant figures are in fact quite critical for our lives because for the organisms having respiratory systems to exist the density, viscosity and pressure should exactly be as they are now.

God has created the solar system and the universe without a flaw. The all equilibriums are in harmony for us to be able to live. The perfectness of the creation is mentioned in the Quran as :

“He to Whom belongs the dominion of the heavens and the earth: no son has He begotten, nor has He a partner in His dominion: it is He Who created all things, and ordered them in due proportions.”