The goal of this task is to translate questions in English into Catalan. The requirements of the translation is that: the text must be equivalent in meaning, the text must not be ambiguous, and the text must be written as a question

Fossils found that were believed to be ctenophores were how old?
Què va passar fa 66 milions d’anys?

What does rhodophyte mean?
Què significa cloroplastidi?

Who led the most rapid expansion of the Mongol Empire?

En quin any va acabar el conflicte amb la dinastia Song?

