I believe the answer is: <span>syntax </span>In English language, <span>syntax refers to the words arrangement that make a sentence considered 'well-formed' and could be understood. For most children, the development of </span><span>syntax could only appear when they're 5 years old or older.</span>
Writing was Rachel Carson's greatest skill and Silent Spring was her most important contribution to the world since it launched the global environmental movement today. Carson worked to purge the United States of deadly pesticides like DDT that were used everywhere across the U.S. in agriculture and elsewhere.
