Trees can do some pretty interesting things to survive. For example, the baobab tree that lives in parts of Africa, where it is hot and dry for long periods, stores water in its thick trunk during the rainy season.
Tree trunk covered in spikes
When the rains have stopped and it is hot and dry again the trunk shrinks as the tree uses up the stored water.
To protect from damage and damp, conifers produce resin, a sticky substance. When the tree is damaged resin keeps wood eating insects out and kills bacteria and fungi that could infect the wounded tree.
Some trees are even covered with spikes for protection, like this tree species in Honduras.
