Human language is instructive, it can be taught, what kind of language is learned is acquired, animal language is born, no need to learn. The way of learning human language is determined by culture, not inherited.
Human language has impartive, it can be imparted, master what kind of language is learned the day after birth, animal language is born, do not need to learn. The way human language is learned is determined by culture, not by heredity.
Human language has the nature of imparting. It can be imparted. To master what kind of language is acquired. Animal language is born without learning. The learning style of human language is determined by culture, not by heredity.