Michael Chabon in Henry Jenkins; Wyn Kelley; Katie Clinton (2013). Reading in a Participatory Culture: Remixing Moby-Dick in the English Classroom. Teachers College Press. p. 146. ISBN 978-0-8077-5401-6.
It has been well said that an author who expects results from a first novel is in a position similar to that of a man who drops a rose petal down the Grand Canyon of Arizona and listens for the echo.
P. G. Wodehouse in P G Wodehouse (26 March 2009). Cocktail Time. Random House. p. 29. ISBN 978-1-4090-3522-0.
Like all ecosystems on Earth supporting animal and plant life, aquatic ecosystems need oxygen. However, oxygen availability in these systems is threatened by global warming and excessive input of nutrients such as from agriculture and wastewaters, known as eutrophication.