ethical problems on environment,

My topic is about ethical problems on environment,   write some thing about overhunting, pollution cause by illegal release. But it sill need another controlling idea and I have no idea about it, so please help me to find a new one and the sources. Here are the requirements about my essay. 1. At least 1500 words. 2. Please use APA form to write. 3. I have searched some resources, if you think it is not good or can not use in my essay, you can change some new examples but need to add the source in the reference pages. 4. You don’t have to write very well because I’m still studying in ESL, so there may should have some grammar errors or vocabulary errors. And also please do not use too much professional words, thank you. 5. The due time is October 14. https://www.theguardian.com/news/2016/dec/25/what-will-be-the-big-environment-events-in-2017 http://www.thecanadianencyclopedia.ca/en/article/hunting/ http://www.theecoambassador.com/Causesofwaterpollution.html http://www.livestrong.com/article/133613-the-human-impact-on-air-pollution/ http://www.taipeitimes.com/News/taiwan/archives/2015/09/19/2003628079