I believe all options are correct...
Answer:
C. Burning coal to produce electricity
During cellular respiration, carbon dioxide is released to the atmosphere during the formation of acetyl coenzyme A<span>. This step involves the oxidative decarboxylation of pyruvic acid, the result of which is carbon dioxide. This carbon dioxide is uptaken by plants and used in the process of photosynthesis to produce glucose.</span>
I think its bamboo lemurs and bamboo rats that also eat bamboo exclusivly i hope that helps ^^;<span />
There doesn't seem to be a maximum number. Ultra high molecular weight polyethylene has around 500 thousand carbons that are linked together.