Which sense uses more cortical space than other senses? (in other words, which sense uses the largest portion of the

Vision is the sense that uses largest part of the brain. The brain the portion of the central nervous system contained within the cranium. Cranial Nerve II is Optic nerve Major Function.   Cranium and the cranial meninges - surround and protect the brain. 

a polymer is a chainlike molecule made up of small molecular units. these small molecular units are called monomers. monomers of polymer can be joined together either naturally or synthetically.  

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.