Maybe you could try and use a little grammar, and make the question clearer.
The ravens have to not be terrible
Researchers from Durham University explain that the uniquely expressive power of human language requires humans to create and use signals in a flexible way. They claim that his was only made possible by the evolution of particular psychological abilities, and thus explain why language is unique to humans.
Source: https://royalsociety.org/news/2013/language-unique-humans/
Languages can differ in many ways. They may use different sounds, they may make words in different ways, they may put words together to form a sentence in different ways, and that's just for starters! ... Dialects of a language may vary in terms of accents, the words people use, the way people structure their speech.
Source: https://lingroadshow.com/all-about-language/languages-of-the-world/how-can-languages-differ/
The detail from "the city without us" most clearly shows that nature is more powerful than it appears is the size of the Japanese insect that can kill hemlock trees. “The City Without Us,” is particularly relevant — if depressing — for New Yorkers because it portrays a city robbed of its eight million people, submerged by water from below, then ravaged by devastating fires, and finally overgrown with vegetation.
