Answer:
common meaning of tree is :
supply of oxygen
Our solar system is located in the outer reaches of the Milky Way Galaxy. The Milky Way contains over 200 billion stars. Most of the star's are not visible from Earth. Almost everything that we see in the sky belongs to the Milky Way Galaxy.
Everybody always uses it to mean some kind of liquid that's hot and smoking,
like glowing smoking molten lava creeping down the sides of a volcano, or red
hot molten steel pouring out of the furnace in a steel mill in a shower of sparks.
But I think technically it just means melted ... water is molten ice.