the thorns of its own..hmm..
(III-hydrogen)
they use their spine or thorns ang their rough skin
it use a rifle and bowie knife to fend of any one who trys to pick it from its tree, it ofen has grenades
They have those spiky shells (spiky like pine needles, which is why they are called pineapples) around the meat and if the pineapple falls out of the tree the spikes will protect it!
to defend themselves to their enemies
They protect themselves by squirting ink.
To protect from cattle grazing
Citizens protect themselves with police departments. Nations protect themselves with a military.
how do lionfish protect themselves
they use their sting tail to protect themselves
no, they protect themselves XD I have to laugh at that, but it is true they protect themselves.
Barnacles protect themselves by sticking to something sturdy.
dont think they can protect themselves
They protect themselves with their horns, made with really strong bones , and thick skin used as a shield to protect themselves.
I think they protect themselves by their height,or attract other bugs that kill the pest. Or standing still. They also protect themselves by pulling in their long flowers to protect the seeds.