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1. Let me ask about the foam first. What causes foam to appear on lakes, rivers, and streams?
2. OK, good info. When am I most likely to see natural foam on a waterbody?
3. Well, that makes sense. But is foam harmful?
4. Natural and unnatural foam: got it. How can I tell what kind of foam it is?
5. What should I do if I suspect a waterbody's foam is the result of a chemical release or spill?
6. Wow… I’m learning a lot! Now that I know about foam, what causes surface scum on a lake?
7. But why does the water quality of our lake seem to get worse throughout the summer?