How Fortunate Are Those Who Understand

Allahu ta'ala created everything in the best form and for the most useful purposes. For example, He created this spherical earth one hundred and fifty million kilometres away from the sun. If He had created it at a distance longer than this, there would have been no warm seasons and we would have died from the cold. If He had created it at a distance shorter than this, it would have been very hot; hence, no living creatures would have been able to exist.

The air around us is a mixture of 21 % oxygen, 78 % nitrogen, and 0. 0003 carbon dioxide. Oxygen comes into our cells, burns the food there so that power and strength are provided for us. If the amount of oxygen in the air had been more than this, our cells would have been burned by the oxygen, too; therefore, we would have become ashes. If its percentage had been less than 21, it would not have been adequate enough to burn the food in our cells, and again there would have been no living creatures.

During rainy and thunderous days, oxygen mixes with nitrogen and nitrogenous salts are formed in the sky; they fall to the earth with the rain. They feed the plants. Plants are food for animals, and animals are food for human beings. Therefore, it is understood that our sustenance is produced in the sky and rains down from there. The carbon dioxide in the air stimulates the centres of the heart and breathing in the cerebellum; that is, it makes them work. When the amount of carbon dioxide in the air becomes less, our hearts will stop, and we will not be able to breathe. On the other hand, if its percentage increases, we will choke. The amount of carbon dioxide in the air should never be changed.

In order to keep it in the same consistency, He created the seas. When the amount of carbon dioxide in the air increases, its pressure increases, too, and the excessive amounts are dissolved in the seas. After uniting with the carbonate in the water, it is converted into bi-carbonate. This goes down under the sea and forms a layer of mud there. When the amount of carbon dioxide decreases in the air, it leaves the mud, passes in the water, and then passes from water into the air.

No living creature can live without air. That is why air is given to every living creature everywhere, free of charge, without any effort, and sent into their lungs. We cannot live without water either. He created water everywhere too. But, since it is possible to live without water for some time, it has been created in a way that forces people to look for it, and then to carry it away. Fa-tabarakallahu ahsunal-khaliqin! Aside from man's ability to utilize those facts above, how fortunate for them to be able to see and to understand them.