How many letters are there in the Arabic Language?

Air is made of gaseous elements and compounds that interact but are not bound to each other. so air can be considered a

Can someone translate the swahili word 'cheo' for me ? i do not understand.

Can you explain how not having closed caption on the tv affected the man in the first video, when he was a child? it did not affect him it caused him to be behind and disconnected. it caused him to be ashamed of his deafness it him to understand hearing people better.