Answer:
Poznań is a city on the Warta River in western Poland. It’s known for universities as well as its old town, with Renaissance-style buildings in Old Market Square. Poznań Town Hall houses the Historical Museum of Poznań, with exhibits on the city. The town hall's clock features mechanical goats that butt heads at noon. The Gothic and baroque Saints Peter and Paul Cathedral is built on an island called Ostrów Tumski.
Explanation:
Write some facts about Poznan.
Chamul, with it originally being a sir name was a name of origin being Hebrew but coming from Mexico most likely
the Doppler effect
it is the change in frequency or wavelength of a wave for an observer moving relative to its source
