A chemical formula contains information on the types and spatial arrangement of bonds in the chemical. It also tells you what elements are in the chemical, and how many atoms of each. The spatial arrangement is not necessarily very obvious from the formula, e.g. C2H5OH does not tell you much about the spatial arrangement of the bonds. A chemical formula contains information on the types and spatial arrangement of bonds in the chemical.
All modern amphibians are included in the subclass Lissamphibia, which is usually considered a clade, a group of species that have evolved from a common ancestor. The three modern orders are Anura (the frogs and toads), Caudata (or Urodela, the salamanders), and Gymnophiona (or Apoda, the caecilians).
Ectothermic vertebrates belonging to the class Amphibia are collectively known as Amphibians. The term âectothermicâ means the physiological heat sources of these animals are insufficient for maintaining the proper body temperature. Amphibians belong to the superclass Tetrapoda or tetrapod. Frogs, toads, salamanders, newts and caecilians are different animals in the Amphibia class. The term Amphibian was derived from the Greek term âamphibiousâ, which means âboth livesâ or âtwo livesâ (âamphiâ meaning âbothâ and âbiosâ meaning âlifeâ).