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: Several radioactive substances are considered carcinogens , but their carcinogenic activity is attributed to the radiation , for example gamma rays and alpha particles , which they emit .

Answer: The carcinogens in them are caused by the radiation they release , such as gamma rays or alpha particles .

Question: In later life , according to his official biographer Philip Ziegler , at dinner parties Heath was " apt to relapse into morose silence or completely ignore the woman next to him and talk across her to the nearest man " ; others at the time claimed Heath was just not talkative at parties .

Answer: In later life , according to his official biographer Philip Ziegler , Heath was " apt to relapse into morose silence or completely ignore the woman next to him and talk across her to the nearest man " .

Question: The most common use of a firework is as part of a fireworks display ( also called a fireworks show or pyrotechnics ) , a display of the effects produced by firework devices .

Answer:
The most common use of a firework is as part of a fireworks display .