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Marine phytoplankton, Asteromphalus sp. Lugol fixed sample. 400x magnification. Selective focus
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Nature abstract: Green algae covering much of river surface late in summer, northern IllinoisImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/nature-abstract-green-algae-covering-river-152700377">Image used under license from Freestock.com</a>
Closeup of coral fossils on a large rock in the Florida KeysImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/closeup-coral-fossils-large-rock-florida-231257383">Image used under license from Freestock.com</a>
Hand with smartwatch and health medical tracker concept. Image used under license from Freestock.com<a href="https://www.freestock.com/free-photos/hand-smartwatch-health-medical-tracker-concept-787879594">Image used under license from Freestock.com</a>
fruit is healthy for the organismImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/fruit-healthy-organism-463614">Image used under license from Freestock.com</a>
Hand with smartwatch and health medical tracker concept. Image used under license from Freestock.com<a href="https://www.freestock.com/free-photos/hand-smartwatch-health-medical-tracker-concept-771750433">Image used under license from Freestock.com</a>

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