anything can live in trees like animals and even people
Apples are living things. They grow on apple trees. They have seeds inside of them that can grow more apple trees.
Sapsuckers (a species of woodpecker), lives inside of living hollows of trees and drinks the sap. Basically.
a thrush
birds squirelles
trees
Some trees bear seeds inside fruit and some bear seeds inside pods or cones.
In trees.
in lives in trees
because it lives on trees
Pine trees
The trees were already there - the palace was built around them,
Probably the Koala which lives in trees in Australia.