Fossils are the remains and imprints of plants and animals that lived on Earth in the long past era. But turns into a fossil only a small part of plants and animals. As a rule, their remains are either eaten by other animals or decomposed by the action of fungi and bacteria. Shells or hard bony skeletons persist longer, but eventually they are destroyed. It was only when the remains are buried in the ground very quickly, before they have time to decompose, they have a chance to survive and turn into a fossil. To the deceased plant or animal was buried rapidly, it is necessary that over it there was a sediment, for example sand or silt. Then his remains were soon denied access of air and not rot. Over millions of years of sedimentary layers of the lower pressure of the upper turn into solid rock.
Water that seeps into sedimentary strata, contains minerals. Sometimes she washes them out of the sedimentary material. Under the weight of the upper sedimentary layers of the water displaced from the bottom. Minerals remain within and contribute to the bond of the sedimentary layers and their solidification into rock. These minerals are deposited even in the remains of plants and animals, filling the spaces between their cells, and sometimes even “replacing” their bones or shells. So obratimosti naturally grow in the stone and remain there Continue reading
Recently during surface excavations carried out in the vicinity of the city Bademli that in Izmir province, archaeologists found mentioned in ancient books the island on which was built the ancient city of Cana.
After studying the geological samples taken from the strata of rocks of a small Peninsula near Bademli, archaeologists have discovered that the Peninsula was once in ancient times was an island. It turned out that the Strait separating the island from the mainland, over the centuries has filled with silt.
Open again is the third island in the chain Argiroski Islands, mentioned in the ancient sources. For many years among archaeologists, historians and geographers were debates about their location.
Archaeologists of the University of Cologne in cooperation with colleagues from the German archaeological Institute, with the participation of historians, geographers and geophysicists from the universities of Manisa, Cologne, Rostock and Southampton began an archaeological excavation to find the location Argiroski Islands, which, according to ancient texts, had to be located somewhere near Bademli. Continue reading
Anthropogeny — the process of origin and evolution of man.
Driving forces of anthropogenesis.
1)anthropoid ancestors pax; 2)most ancient and ancient ancestors pax; 3)people present, morphologic building.
• individual selection aiming to morphophysiological traits is bipedalism, the structure of the brush, the development of the brain; • group selection, aimed at the social organization; • bio-social selection, the result of the combined action of the first two forms of selection. Acted at the level of individual, family, tribe.
The main driving force of anthropogenesis was the work in which you create your tools. The main factor is labour-was specific to the evolution of the pax. Particularly important was the emergence of a straight gait. Biologically bipedalism brought the man a lot of complications. But due to bipedal locomotion freed the hands for tools. At the beginning of the process of formation of the person his hand was underdeveloped. It took a long time for our ancestors moved from the use of the OCD subjects. nature. environment as weapons in their manufacture. Continue reading