The definition of a chortle is a chuckle or breathy, gleeful laugh. The breathy laugh you make when someone is tickling you is an example of a chortle. To chortle is to laugh in a breathy and joyful way. When someone is tickling you and you make a snorting chuckle sound, this is an example of a time when you chortle.
1 This page: http://www.globalissues.org/article/172/climate-change-affects-biodiversity. 2  To print all information e.g. expanded side notes, shows alternative links, use the print version: 3  http://www.globalissues.org/print/article/172.
Global climate change has already had observable effects on the environment. Glaciers have shrunk, ice on rivers and lakes is breaking up earlier, plant and animal ranges have shifted and trees are flowering sooner.