Stinging Nettles have hollow hair covering them which protects them from predators trying to eat them. Stinging Nettles also have a chemical mixture covering them to protect itself.
Human hair is not hollow. It is solid right through and made up of different layers. The core is called the medulla. The outermost layer is called the dermic coat.
what is the difference between solid and hollow?
hollow
hollow
Hollow
Solid
hollow
Q: What type of speleothems is solid and which is hollow?
are hedgehogs spikes hollow
Reindeer have hollow hair, but deer which live in temperate zones do not.
solid.