The science of classifying and naming organism based on their different characteristics is called

Taxonomy

Explanation:

Taxonomy is the science behind the classification and naming of living organisms based on their unique characteristics. According to taxonomy, living organisms are arranged from large to smaller categories, and are as follows:

Kingdom --> Phylum/Division --> Class --> Order --> Family --> Genus ---> species.

Also, organisms are named by two names. The first name is the genus while the second is the species. For instance: Homo sapiens is the scientific name for man

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick

trachea, alveoli, lung capillaries, arteries