Essay on Role of Doctor in Society

Doctor is a person who dedicates his knowledge and skills for the prevention and treatment of diseases, maintain and enhance human health.

Doctors were always in demand and appreciated by society. So many people are seeking a medical education, which is why competition in Medical Schools is very high, while studying medicine is not so easy, and the number of years required to become a fully trained doctor is more than in other professions. However, that does not stop modern students, and crowds of them again and again are trying to conquer the door of receiving commissions.

The doctor has traditionally enjoyed a special status in any society, and there are high ethical and legal requirements. It is believed that a "real" doctor should be a role model for the general public not only in the matters of health (do not smoke, do not drink alcoholic beverages, to keep an active life style, eat right), but also morality. It is believed that the doctor should be fully committed to Medicine, compassionate, humble, and sober in assessments of his needs, to exercise the force of spirit and determination in difficult life situations.

Essay on Evolution of Money

For starters, let's figure out, what is money? This is a special kind of commodity, which plays the role of a general equivalent, and has specific functions: means of payment, the accumulation, circulation, the measure of value.

Prerequisites for money were trade relationship between humans based on barter. At this point, people have started to realize the inconvenience associated with this system, it was expressed in the absence of a specific equivalent, which could be a fixed cost of goods allowing the deal between buyer and seller.

It is impossible to say exactly when the first money was used or officially adopted. One of the most ancient mentions about dates back for 4500 years and comes from a place located in the modern State of Iraq. It talks about the silver, as a due measure of payment. Money looked differently at different times.

Stone money, in the form of a disk, was used on the island of Yap (the Pacific Ocean) to pay for the litigation and the public expenditures. Among them were these giants up to 4 m in diameter.

Money-axes were used by native Americans in Mexico, they were kind of small axes made of copper. In addition to this money, the Indians also used cocoa beans for payment.

Ethiopian salt sticks from salt deposits were used as money until the 1920’s in Ethiopia.

Essay on Biological Cycles

Many natural biological processes are cycles; this means that different state of the body alternate with sufficiently clear frequency. The simple examples of quick cycles are breathing or heartbeating when the periods of muscle contraction are alternated with the periods of muscle relaxation. The other vital cycle, such as the alternation of wakefulness and sleeping, are the short-term periods with approximately 24 hours cycle. If a biological cycle is a tides dependent, they are called tidal, it has cycle of 12.4 or 24.8 hours longevity. The period of lunar biological cycles corresponds to the length of the lunar month.

Biological cycles are interesting because in many cases they are independent from ambient conditions. Such cycles are called endogenous, i.e., "coming from the inside": though usually they are correlated with the rhythmic changes in the external environment, such as the alternation of day and night, they cannot be considered as a direct response to these changes.