Because the oxygen produced in photosynthesis is used in respiration, and the carbon dioxide produced in respiration is used in photosynthesis.
The patient is receiving succinylcholine or commercially called anectine.
Succinylcholine is a medication often used in the context of general anaesthesia and its main effect is general paralysis. The drug's mechanism of action includes the inhibition of the acetylcholine's action on skeletal muscles. This inhibition is caused by the binding of the drug on the nicotinic acetylcholine receptor and the depolarization of the muscle cell.
it is not because trees do not grow fast enough
It is an glycosidic bond.