to make simple, compound and complex sentences

195 TASK 7 The following paragraph contains too many compound sentences (the coordin- ators are in bold). Improve the style of the paragraph by rewriting it with a variety of sentence types The Twins Study The Twins Study was set up by NASA, and brothers Scott and Mark Kelly were the main subjects of the study. NASA astronauts Scott and Mark were born identical twins, but they are no longer twins according to the Twins Study results. As part of the study. Scott spent an extended period on the International Space Station, and his twin Mark remained on Earth. Seven percent of Scott's DNA changed in space, so he was no longer Mark's identical twin on his return to Earth. There were some positive results to the study, but most findings illus- trated the detrimental effects of living in space on humans' DNA. 1 MacBook Air