In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
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Question: In chemistry and physics , activation energy is the energy which must be provided to a chemical or nuclear system with potential reactants to result in : a chemical reaction , nuclear reaction , or various other physical phenomena .

Answer: The activation energy of a chemical reaction is the minimum energy that is needed to make the reaction happen .


Question: It was common for the Ernestine duchies to merge and split ; Ernest 's combined duchy was divided again after his death in 1675 , and the Duchy of Saxe-Gotha-Altenburg proper came into existence in 1680 with the completion of this division and the accession of his eldest son , Frederick to the subdivision centered on the towns of Gotha and Altenburg .

Answer: The duchy was split up again after Ernest ’ s death in 1675 , and the Duchy of Saxe-Gotha-Altenburg officially came into existence in 1680 when his eldest son , Frederick , took control of the parts of the country Gotha and Altenburg .


Question: Corpus Christi College ( formally , Corpus Christi College in the University of Oxford , informally abbreviated as Corpus or CCC ) , is one of the constituent colleges of the University of Oxford in the United Kingdom .

Answer:
Corpus Christi College is one of the colleges of the University of Oxford .