The Fischer-Saller Scale classifies human hair color into 24 shades, ranging from very light to red. These classifications are determined by the amount of two pigments: eumelanin (brown) and phaeomelanin (red). A study published in Forensic Science Communications explains that the scale is the accepted international standard. [1] The most common hair …
Blood types are determined by the presence/absence of inherited antigens on the surface of red blood cells. These antigens may be proteins, glycoproteins, carbohydrates, or glycolipids. There are four main blood groups: Type A blood has A antigens only on the surface (A+) Type B blood has both A and B antigens …
Hundreds of thousands of humans are born with distinctive eye colors. While blue, brown, and green occur most frequently around the world, a wide spectrum of DNA combinations can lead to other eye colors. Most people in the world have brown eyes, with blue eyes ranking second. About 2% of people have …
Rivers are among the various bodies of water that can be found in the world. According to National Geographic, it is a ribbon-like body of water that flows downhill from the force of gravity, and it can be wide and deep or shallow enough for someone to walk across. [1] There are …
When people travel to different places, many are searching for fun and adventure. There are many different ways to have fun in certain places. But if you are traveling with your friends or the whole family, one of the most enjoyable things to do is to visit theme parks. A theme park …
One of the best and most enjoyable things that a person can do in life is to visit various cities and countries in the world. Traveling is something that can expand one’s view of the world exponentially. In every country, there are lots of places to discover and things to do. Those …
Background Sportswear is also referred to as active wear. It pertains to clothing, including footwear, that is worn for sports or physical exercise for practical, comfort, and safety reasons. Some of the usual sport-specific garments include shorts, t-shirts, tracksuits, and polo shirts. There are also specialized garments, such as swimsuits, wet suits, …
Background Mining pertains to the process of extracting useful materials from the Earth. Some of the examples of substances that are mined include iron and gold ores, as well as coal. Iron ore is the material used in producing metal iron. Mining has existed since the prehistoric era. Flint was first mined …
Background With the growth of the Internet, many businesses are increasingly engaged in international competition. When a company starts to grow and expand, its owners start aiming to up its competitiveness. [1] One of the ways to do this is by importing goods and services. Importing entails bringing items manufactured abroad into …
The US is home to some of the most profitable sports organizations in the world and has a huge global fan following. Although American sports bring in tons of money compared to other countries, money isn’t the only thing the American sport is all about. Some sports bring in more money, but …