Alphabet, or phonemic alphabets, are sets of letters, usually arranged in a fixed order, each of which represents one or more phonemes, both consonants and vowels, in the language they are used to write. In some case combinations of letters are used to represent Single phonemes, as in the English sh, ch and th. The Greeks created the first phonemic alphabets when they adapted the Phoenician alphabet to write Greek. History of Alphabets Written language was the product of an agrarian society. These societies were centered around the cultivation of grain. Palaeography is the study of the progressive changes and developments in the form of letters over time and is usually applied to writing on less durable materials such as parchment, leather or papyrus. Where did the alphabet come from? One of the most significant inventions in human history, the alphabet has a rich and fascinating history. Here’s the 30-second version of the story. The original set of 30 signs, known as the Semitic alp
Deserts are dry areas that experience extremely small amounts of rainfall. They can be either cold or hot. Deserts are determined by low amounts of rainfall, not temperature. They typically receive less than 30 cm of rain per year. The driest deserts often receive less than 2 cm of rain per year. Temperatures in the desert are extreme. Because of the lack of moisture in the air, heat quickly dissipates as the sun sets. In hot deserts, the temperatures can range from above 100 degrees Fahrenheit in the day to below 32 degrees Fahrenheit at night. Cold deserts generally receive more rainfall than do hot deserts. In cold deserts, temperatures in winter range between 32-39 degrees Fahrenheit with occasional snowfall. Some locations of Cold Desert Antarctic Central Asia Greenland Some locations of Hot Desert North America West Coast of South America Central Australia North Africa Middle East Deserts Wildlife Deserts are home to many burrowing animals. These animals include badgers, jack rab