Flatworms and plankton in freshwater, as seen under a microscope.
Palabras clave
biology,
zoology,
flat,
microscope,
life,
duck pond,
microscopic,
biological,
animal,
science,
water,
education,
parasite,
disease,
zoological,
spot,
tiny,
background,
laboratory,
system,
eye,
climbing,
whole,
throated,
fish
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