Andrey Solovyev

Heterocycles are parts of: * Biomolecules (nucleic bases in your DNA and RNA; amino acids Histidine

Learn all 18 Regions of France: 13 in Metropolitan France (Normandy, Île-de-France, and others) and

所有35个独立的美洲国家：北美，中美洲和南美洲。 从加拿大到阿根廷。 *旗 *地图 *首都 - 翻译成中文- 所有的游戏模式立即可用

Проверьте свое знание российской и советской истории! В этом приложении вы найдете портреты и дополн

Can you guess a famous scientist or a mathematician? Do you know why he or she is famous? Challenge

Learn all 16 Federal States of Germany. From Lower Saxony to Thuringia: North Rhine-Westphalia, Berl

Here you learn the basic geometric terms (planimetrics): the types of triangles and polygons, the pa

Begin - began - begun... The app contains all important English irregular verbs (more than 200 verbs

For all opera fans! Demonstrate your knowledge of the 50 most performed operas by the most important

This app is for everyone studying English language! Check your knowledge of the 100 most frequently