Penal is a adjective.This term can be related to the punishment of offenders in the legle system.The synonyms of this word are criminal and Punsihable.
The ozone layer
The insulating layer
Myelin Sheath
Blubber
Insulating body hair is a characteristics of the layer of the fat beneath the human skin.
penguins
There is no insulating LAYER of Carbon Dioxide round the Earth. The Carbon Dioxide is mixed up with the Oxygen and Nitrogen in Earth's atmosphere and is not present in the atmosphere as a layer. If the absolute amount of Carbon Dioxide in the atmosphere increases, the Earth would get warmer.
there are multiple things, but mainly the ozone layer and clouds
Their coat has three layers, the first layer keeeps it warm, the second layer provides an insulating coat for it, the third layer of long flat hairs detects object close by.
Adipose tissue is the fat layer under the skin and then muscular tissue.
White fat cells are found under the skin where they provide an insulating layer that helps to keep you warm
Coaxial cable is an electrical cable with one wire in the center surrounded by a layer of insulation which is then surrounded by an outer braided cylindrical conductor and finally covered with another insulating layer.