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Because I post so many science photos, I get quite a few questions about photography. Some want to know what camera I use (Nikon D7000) or what editing software I use (Photoshop and Lightroom), but probably the most common questions is, "How do you manage to find so many things to photograph?"
This experiment is an easy source of protozoa for your regular microscope or your laser microscope. You can even see some of them with a good magnifying glass.
It can also lead to some interesting investigations and science projects.