Hydrocarbons are a group of organic compounds that have only carbon and hydrogen atoms, CxHy.They...

You mosquitoes, also known as muriçocas or carapanãs, belong to the Class Insecta, Order Diptera ...

is called çacid chloride every organic function derived from the reaction between a carboxylic ac...

Portuguese colonizer, plantation owner, merchant, sertanista and navigator born in Ribatejo, know...

In the incessant search for increased production, rising profits, lower costs and being able to c...

O Uranus planet is the third largest of the Solar system and is positioned on the seventh orbit f...

The syllabic division of words, in addition to representing a subject that perhaps becomes the t...

The Franco-Prussian War of 1870-1871 was regarded as the first war in which modern combat methods...

Urbanization it's the growth of cities, so much in population how much in extension territorial. ...

Cairo-born Egyptian sultan who became the first king (1922-1936) of modern Egypt, promoted a new ...

The political-territorial configuration of Italy, in the beginning of the 19th century, suffered...

If we woke up one day and there was no longer the star that brightens our mornings? Everyone know...