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8
votes
1answer
366 views

Why are we using upper teeth and lower lip on labiodental sounds?

I came to wonder this when studying language (as well as other same theme question posted just few ago). For example the word "fantastic" we use upper teeth and lower lip to produce F sound, instead ...
5
votes
1answer
566 views

How and why did mouth and nasal cavity evolve separate?

My initial objection is that nose filters air, mouth is for eating but is used for breathing also, plus they both are used to create sounds. What is the cause and reason in this case, why do we need ...
5
votes
1answer
145 views

Is there such thing as Animal non-verbal body language?

Have there been any studies done on the animal use of their bodies to signal, communicate or express their emotions, particularly to members of other species (ex: humans)? I've been observing a very ...
3
votes
0answers
51 views

What are the most well-understood vocal animal languages? [closed]

Just as the Bee dance, for a "language", I mean that there are vocal pattens, or "grammar". In the nature, there are many intelligent animals like human beings. Bird songs, whale songs, dogs? In ...