Industries produce waste that can affect the: 1  pH of water (whether it is acid, neutral or alkaline); 2  colour of water; 3  amount of nutrients (increase in nutrients can cause eutrophication);
Definition. An overview of content that provides a reader with the overarching theme, but does not expand on specific details. A summary describes a larger work (such as an entire book, speech, or research project), and should include noticeably less content then the original work. Summaries can save a reader time because it prevents the reader from having to actually go through and filter the important information from the unimportant.
1 In the recode file these variables are combined and created in a form that is easier to use for analysis.  Third, summary variables are often necessary in analysis and many of these, including the summary variables that are used in the DHS reports, are included in the recode file.