Don Wetzel, Tom Barnes and George Chastain developed the ATM cards, cards with a magnetic strip and a personal ID number to get cash. ATM cards had to be different from credit cards (then without magnetic strips) so account information could be included. 1  Don Wetzel-The ATM.
Par 8 9 THE SKIN The skin is a highly organised, complex system of nerves, tissue and cells designed to harmonise the horseâs metabolism with his internal and external environment. Structurally, the skin consists of the epidermis and the dermis.It is the largest, heaviest organ in the horseâs body. Its healthy condition is of vital importance to health and survival. The epidermis is made up of several stratified layers of tough, non-vascular cells that vary in thickness.ar 8 9 THE SKIN The skin is a highly organised, complex system of nerves, tissue and cells designed to harmonise the horseâs metabolism with his internal and external environment. Structurally, the skin consists of the epidermis and the dermis.
The structure of the rhino horns is similar to a pencilâs tough lead core and weaker wood periphery, which allows the horns to be honed to a sharp point. Thus, the horn is not simply a clump of modified hair and most closely resembles the structure of horsesâ hoofs, turtle beaks and cockatoo bills. The study also found that the melanin and calcium patches appear in yearly growth surges but the effects of temperature, diet and stress on the growth are still unknown.