Giving a speech on environmental issues - stylistic devices

Your class is planning to take part in a European competition for vocational schools called “U turn green”. You apply for participation by giving a speech on how to make your life more environmentally friendly. According to the rules you are supposed to take part in teams. Your contributions will be presented in class and all classmates vote for the team which is most likely to win a prize. This team will represent your class in the competition.