I believe the answer is B - point source comes from a specific site, non-point comes from many sources
That is what it looks like
During the fall of 2009, the high tide entered the nisqually estuary for the first time in over 100 years.
<h3>What is Nisqually estuary?</h3>
This is formed when the freshwater of the Nisqually River meets the salt water of Puget Sound.
In the fall of 2009, the high tide entered it for the first time in nearly a century.
Read more about Estuary here brainly.com/question/785597
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You get 23 from each they contain the same genes but are slightly different. Hope this helps !!!!!!!!!!!