Re: Is rubber considered a non-living things once alive?

This is a question that might be answered either way depending on how you look 
at organic compounds. 

Rubber is made from organic compounds found in the latex of the rubber tree 
(Hevea brasiliensis) and a few other species. Natural rubber ultimately comes 
from a living plant. However, I would not consider rubber to have been "once 
alive."

Wood, paper, dried flowers, canned fruits and vegetables, frozen fruits and 
vegetables, I would consider "non-living things once alive" because they 
consist of dead cells that were once alive. 

Sugar (from sugar cane), soybean oil and rubber I would not consider to have 
been alive because they are organic compounds, not entire cells.

Reference


Hevea brasiliensis:The Rubber Tree