LS3 Wang and Tuason/ Winter 2015 The hidden power of smiling VOCABULARY: Vocabulary word conduct Part of speech verb Definition Example sentences to plan and do (something, such as an activity) The police are conducting an investigation into the robbery. Scientists conducting research on polar bears. I like the way the company conducts business. enhance verb to increase or improve (something) percent noun one part in a hundred You can enhance the flavor of the dish by using salt. Some athletes take drugs to enhance their performance. Lance Armstrong took performance enhancing drugs during his bike races. Thirty percent [=³/₁₀] of the class failed the test. Water covers more than 70 percent of the Earth's surface. predict verb to say that (something) She claims that she can predict future will or might happen in events. the future It's hard to predict how the election will turn out. research verb and noun careful study that is done to find and report new knowledge about something response Noun something that is done as a reaction to something else She conducts research into the causes of Ebola. Recent research shows that the disease is caused in part by bad nutrition. The study is an important piece of research. When you knocked on the door, was there any response? I was surprised by his response when I told him my plan. LS3 Wang and Tuason/ Winter 2015 theory noun an idea or set of ideas that is intended to explain facts or events Her method is based on the theory that all children want to learn. There are a number of different theories about the cause of the disease. source noun the cause of something His family is the source of his happiness. initially adverb occurring at the beginning of something The reason I initially [=originally] came here was to find work. It turned out that the situation was not as serious as we had initially believed. technology noun the use of science to invent useful things or to solve problems evolution noun stress noun and verb the process by which changes in plants and animals happen over time a state of mental tension and worry caused by problems in your life, work, etc. Recent advances in medical technology have saved countless lives. The company is on the cutting edge of technology. Charles Darwin was the first person to write about the theory of evolution. Hormones are released into the body in response to emotional stress. He needs help with stress management. [=ways to deal with stress] He had a lot of stress before the big test. Definitions and example sentences from http://www.learnersdictionary.com/