المشاركة الأصلية كتبت بواسطة life is hard

which of the following is not an indication that a communication system is based in the biology of its users:
(a) being species specific
(b) being universal to members of the species
(c) being made of sounds and symbols
(d) being affected by the environment

الله لايهينكم مره اشوف الأجابة الأولى الصح

مره اشوفها الثالثه

ابي تعتمدون لي على وحده