What can rubber withstand?

a rubber band is still rubber because if u stretch it it wont chance

No , foam and rubber are very diffrent .

Rubber bands are made of rubber because rubber is stretchy so it is able to wrap around materials such papers, pencils, poster boards, etc. Also, it is a strong material so it usually does not break.

by collecting its sap. you kind of make a hole or slice... a small one, something like that then put a tube on it then a pail whih collect the falling sap...

A rubber.