What is sharted among the countries on the Arabian peninsula is that all of them have an arid climate and petroleum reserves, as well as some patches of desert. This is a common characteristic for the countries which exist there and is shared by all of them.
Egyptians advancements were helpful because their knowledge of astronomy helped farmers to consider the time and seasons. And the mathematics portion helped with measurements of time for a calendar.
The answer is racial ....
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Formaldehyde can be added as a preservative to food, but it can also be produced as the result of cooking and smoking. Formaldehyde also occurs naturally in the environment. Humans and most other living organisms make small amounts as part of normal metabolic processes. Formaldehyde is also a byproduct of combustion. When burning natural gas, kerosene, gasoline, wood, or tobacco, formaldehyde is produced. Automobile exhaust is a common source of formaldehyde in our environment. Tobacco smoking in the home is another source of the chemical in the indoor environment.
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