The copolymer styrene-butadiene rubber (SBR) , shown below, is used for making tires as well as bubble gum. Is it an addition polymer or a condensation polymer? 
Definitions:
End-of-life Issues
Ethical and practical considerations surrounding the processes of dying, such as medical decision-making and palliative care.
Managed
The process of handling, directing, or controlling things or people, often in a professional context, such as managing a business or project.
Mature Understanding
An advanced level of comprehension and insight into a subject, idea, or situation.
Death
The cessation of all biological functions that sustain a living organism.
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