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In this lesson, you will learn about one of the greatest masters of Bulgarian science-fiction.
In this lesson, you will learn about the life of a significant Bulgarian poet and literary translator.
A lesson about an outstanding Bulgarian poet, publicist and folklorist.
The rose is one of the most beautiful and most common ornamental plants. Learn about its characteristics.
In this lesson, you will learn about the natural and social geography of Madagascar.
Learn about the life of Stefan Stambolov.
Let's find out the meaning of some basic terms on information technology.
Iodine is an element necessary for healthy physical and mental development.
The aqueous solution of hydrogen chloride gas, known as hydrochloric acid, is a commonly used chemical in laboratories.
Vasil Levski was one of the greatest figures in Bulgarian history, a national hero and revolutionary, who played a key role in achieving Bulgaria's independence.
Chlorine is a highly reactive, toxic gas, which can be used for cleaning and disinfecting.
Learn about the life of the famous monk who played a key role in the Bulgarian National Revival.
In this lesson you can learn about this large scavenger bird species that plays an important role in maintaining the natural habitat clean.
Learn about the medieval khan who founded the First Bulgarian Empire.
Oxygen is the most abundant element in the Earth's crust; it is essential to life.
The ozone layer protects the Earth's surface from harmful ultraviolet radiation; however, the presence of ozone near the surface is dangerous.
An unstable chemical compound consisting of hydrogen and oxygen.
Learn about the history of banks and their main services.
Learn about the main events and results of the French Revolution.
How can others see me? Why cannot they spot me? These are very important questions when being on the road.
Learn about the Byzantine missionary brothers who created the first Slavic alphabet.
Learn about the Egyptian queen Cleopatra, one of the best-known women in Ancient history.
