试翻译下面一段话。切忌抄袭,与直接使用翻译软件。Describe the paper clips as a material that is not used for energy and cannot be excreted. Redistribute the paper clips, giving each student five to ten clips. Repeat the procedure for passing clips from the lowest trophic level to the highest trophic level, except this time each higher trophic level must collect all clips from at least three people. Since the clips are not used for energy and cannot be excreted, all clips are passed from one row to the next. Since each higher level must collect from three people, a food chain pyramid will be formed, with each person in successively higher levels holding more and more paper clips. Have each trophic level (row) remember how many clips they were holding before passing them on. At the top of the food chain will be one person holding all of the paper clips that were distributed to the rows below.