dichotomous+key.

A dichotomous key is used to classify and sort living things.For example,you take a horse,cow,and a chicken.Then you think of something the animal might have or do.Which of the animals give live birth? Does the cow? Yes. Does the horse? Yes.Does the chicken? No.Now we have taken the chicken out of the choices. Which animal gives drinking milk? Does the horse? No. Does the cow? Yes. That is a example of the dichotomous key. Dichotomous key can be used to sort and classify all kinds of diffrent living and nonliving things. Like animals,herbs,shoes,and shirts and pants ect.