it is part of the immune system, however it is a general symptom like running a fever and isn't enough to know what the problem is. could be bugs, could be old age or half a million other things.
no
Yes, palm trees do produce sap.
no one MADE sap. sap comes from trees.
yes
Resin or Natural Rubber can be made from the sap of trees.
They don't "bleed" sad. But yes, some trees do produce sap.
it is the sap of bonsai trees
prunus armeniaca
Get it from one those trees or whatever they are
The "goo" from trees is called sap.
All trees produce sap but certain kinds produce more. The maple tree produces large quantities of sap. Maple trees store starch to help it survey in the winter. It the turns to sugar and the sap is produced
Yes, sap has many uses.