But with the Italian Risorgimento Rome experienced a third "rebirth". On September 20 1870, Garibaldi's army, which had the task of uniting all of Italy under the crown of Savoy, entered the city through a breach opened in the walls at Porta Pia and, the same year, Rome became the capital of the new Italian state. In a few decades Rome grew to be one of the most important capitals of Europe and of the world: in 1936 it was the capital of the "Italian Empire", even if for a few years because of the second world war.
Today, Rome is a major European political and cultural center, containing the headquarters of the Food and Agriculture Organization of the United Nations. There are also numerous museums, basilicas and palaces, such as the Colosseum, and, in the Vatican City, St. Peter's Basilica, a brilliant example of the architecture of the Renaissance which can be found all over Rome.
Rome stands on seven hills, with an area of . The city is crossed by two rivers: the Tiber, which runs from east to west, and l'Aniene, which runs from north-east to north – within the city, it flows into the Tiber. Rome was built on Sun Hill, later named "Palatine". It grew and covered seven principal hills, which are now the inner city of Rome:
Rome has a Mediterranean climate (Köppen climate classification: Csa), with cool, humid winters and warm, dry summers. Its average annual temperature is above 20°C (68°F) during the day and 10°C (50°F) at night.
The children in Rome have to go to school from the age of six until 16. This takes them to the middle of high school ("Scuola secondaria di secondo grado"). Rome has the biggest university in Italy and it is named University of Rome. It was created in 1303. About 200,000 students go to study at this university.
Rome has an airport, which is named Leonardo da Vinci International Airport (IATA: FCO). There is a fast train that goes between the airport and the city center, the "Leonardo Express", and many commuter railway lines to the nearby suburbs, along with long-distance trains to other cities in Italy. In the city itself, public transport consists of three metro lines (A, B, and C), six tram lines, and many bus routes.
Rome has many old, famous buildings. In recent centuries, the city has become an important tourist attraction.
Carnivore
A carnivore is an animal which eats only meat. Predators commonly hunt and kill their own prey. Scavengers are carnivores which eat animals they did not kill themselves. Carnivores which eat mainly or only insects are called insectivores. Carnivores which eat mainly or only fish are called piscivores.
The word "carnivore" describes more than just the scientific order Carnivora. However, almost all animals in the Carnivora do eat meat, though a few do not.
Cologne
Cologne (, Kölsch: "Kölle") is a city on the Rhine River in the state of North Rhine-Westphalia in Germany. About 1,060,000 people live there, making Cologne the biggest city in North Rhine-Westphalia. It is in the southern part of the 'Rhine-Ruhr agglomeration' of cities with a combined total population of about 10 million people. This is one of the most densely populated areas of the world.
Cologne has an oceanic climate ("Cfb" in the Koeppen climate classification).
The city was founded by the Romans in the year 50 AD. Before that, it was a Roman castle ("castellum") and a town inhabited by a local German tribe named "Ubier" at least for 100 years. Archaeologists have found out that the surrounding area was populated already during the Stone Age.
Traditionally, the city was always Roman Catholic. That changed only recently after the Second World War,as a result of massive immigration of Protestants from the East of Germany. Still the largest number of people, 41.6%, are Roman Catholic, compared to 17% Protestant. 10% of the people are Muslim.
The most interesting thing to see there is Cologne Cathedral. This church was built from about 1248 to about 1550, but completed only in 1880. The United Nations list it as 'World Cultural Heritage'. Cologne's archbishop Rainald von Dassel brought the relics of the biblical Three Wise Men there in 1164. They are kept in a very beautiful golden shrine in the cathedral. Three golden crowns in the coat of arms of the city symbolize them. They made Cologne a major place of pilgrimage.
The University of Cologne alone has more than 50,000 students. It was founded 1919 and is one of the biggest universities in Germany. There are several specialized Schools in addition to the university. The "Hochschule für Musik" is the biggest Academy of Music in Europe. Cologne has two Colleges of Arts and the Sports College again is one of the biggest institutions of its kind worldwide.
Cologne has 31 museums and has one of the busiest train stations in Europe. It is the only train station located next to a big cathedral.
People in Cologne and nearby have their own dialect. They call it Kölsch. During carnival time it even appears on nationwide broadcasts.
Cologne has a handful of broadcasting stations. The Westdeutscher Rundfunk, part of the network ARD, is the biggest producer of television and radio programs in Germany.
Cologne is also famous for Eau de Cologne ("Kölnisch Wasser").
Senegal
The Republic of Senegal (French "République da Sénégal") is a country in West Africa. The capital is Dakar.
Senegal covers a land area of almost 197,000 square kilometres. It has population of about 13 million. The climate is tropical with two seasons: the dry season and the rainy cold season . Senegal was given independence by France in 1960.
Major industries are fish processing, phosphate mining, fertilizer production, petroleum refining, construction materials, ship construction and repair. Peanuts, sugarcane, cotton, green beans, industrial tomato, cherry tomato, melon, and mango are important cash crops.
French is the official language. Since April 2012 Senegal's president has been Macky Sall.
In the 15th century, Portuguese people came to Gorée Island off the coast of Dakar. In the 17th century, French people and Dutch people came there, too. These European countries used the island as a trading post in slaves from the mainland, controlled by the Muslim Wolof Empires. Slavery was later made illegal by France, but soon after, around 1850, the French started to conquer the Wolof. By 1902 Senegal was a part of the French colony French West Africa.
In January 1959, Senegal and the French Sudan became one to form the Mali Federation, which became fully independent on June 20, 1960, as a result of the independence and transfer of power agreement signed with France on April 4, 1960. This did not last long and Senegal and Mali broke apart into separate nations. Between 1982 and 1989 Senegal and The Gambia joined together to make Senegambia.
In the north of Senegal is the Senegal River. To the north of the river is Mauritania. The nation borders Mali in the east, Guinea-Bissau in the south, and Guinea in the south-east. The Gambia is another country inside of Senegal, along the Gambia River. It is about 300 km long.
The north of Senegal is part of the Sahel. The highest mountain is 581 m high. The rainy season is between June and October. The average temperature on the coast is about 24° C, and inland about 27° C.
Developmental biology
Developmental biology is the study of the process by which organisms grow and develop.
Modern developmental biology studies the genetic control of cell growth, differentiation and morphogenesis. These are the processes which turn a zygote into an adult animal.
Differentiation is the formation of cell types, from what is originally one cell – the zygote or spore. The formation of cell types like nerve cells occurs with a number of intermediary, less differentiated cell types. A cell stays a certain cell type by maintaining a particular pattern of gene expression. This depends on regulatory genes.