How do you know each other? paying people to do homework âÂÂI was surprised at how well [the technique] worked, not only for persistent chemicals but for hormones that typically rapidly degrade,â says Usenko. âÂÂIt allows us to ask more complex questions that are difficult to get at, like: What are the impacts of contaminants or stress on these animals?â 必須 2000文字以内 [bbs:youtube:(Youtubeの動画ID)]と書くとYoutubeの動画が貼れます。(例:[bbs:youtube:OQThUAQ0UN0])