By grounding electrical energy.
Invented by Ben Franklin lighting rods are just what they sound like they are rods on a roof to take lighting instead of it hitting a house and burning it down.
because the lighting rods helped them cross the river or an ocean
Or technology is very advanced that the structures are reinforced internally. We also have lightning rods, which attracts lightning and is a safe way to prevent lightning strikes
Rods
So buildings don't catch on fire
Rods
to proctect rib
Rods are the more sensitive, as they are used to pick up on the 'brightness' of something, and cones are used to judge the colour. This explains why all colours appear grey in dim lighting.
they proctect the body if is danger
Lightning rods are used to direct the force of the strike safely as possible and in a direct line as possible to ground. This direct path usually saves surrounding structures from damage.
Sponges protect themselves with spikes in their body.
with its sharp needle like fangs