#unknownfacts

Cactus is a common plant in the desert. With those fierce spines, it seems like a soldier wearing a shining armor.

 

But have you ever wondered why it evolves like this?

 

Besides preventing predators, scientists believe the thorny surface can collect water and accelerate seeds spreading, which is important to the desert survival.

 

Click this picture to learn more about how spines empower the cactus to survive in harsh conditions.

#plants