The plastic cans are just plastic, the metal cans are lined with a coat on Teflon or lacquer.
A lining made of mucus.
Shoes are mostly made out of leather or rubber.
Two points
digeridoos are made by cuting a bamboo tree , then cuting the inside out and then you paint it the way aboriginals do it
rubber boots in general means a water resistan foot wear ....it is made of neoprene rubber, butyl rubber
when was paint made
OSHA requires that obstruction be visible. How they are made visible to vehicle drivers is not specified.
tubelights in buses are made to glow by the inside being painted with this paint which glows when it comes into conatct with a noble gas for example argon. The paint glows producing a white light
uniform, suits and lining
no
Veins, in most animal circulatory systems, carry deoxygenated blood from the tissues back to the heart.The exception are the pulmonary veins, which carry oxygenated blood to the heart.There is also a lining inside the veins made of epithelial tissue.
All elements, including gold, excepting hydrogen, helium, and lithium, were made inside stars using nuclear reactions.