American salamander it's Lava call exolotl larva develops sex organs and performs sexual reproduction.
Neoteny it is the occurrence adult organs of adult organs or traits in the larva e.g. axolotl larva.
Biochemistry it is the branch of science that deals with composition nature mode of formation and functioning of bio chemicals.
Biophysics study of biological structure and function in terms of physical phenomena and methods of Physics.