There are many different sign languages in the world. How do different sign languages reflect the environment of the speakers? Explain why sign languages are considered languages, and not just a system of gestures. Solution Sign languages differ based on the environment of the speakers. There are more around 137 sign languages used around the world. As there are different languages used in different parts of the world and these sign languages are derived and based upon the culture of the people, sign language differ in the similar way. Sign languages are also based on the cultute or environment of a particular area. As sign language devlops in an area it simultaneously brings in some elements of the spoken language, which is largely inspired by the culture or surrounding. Sign language differ from each other dependin upon, how much the spoken language element is borrowed into it. Sign languages are considered as languages as they are used to effectively communicate among people. Sign language is not only used by people who are deaf, this language is also used by people who are not deaf. Sign language can be used to effectively transmit the message from one person to other, therefore it is considered as a system of language and not just a system of gestures. Also sign language consists of grammers and other parts, whic are quite similar in nature to spoken language..