Ключевые слова: alga, algae, animalcule, aquaculture, asexual, aureus, background, biology, botany, cell, charophyte, chloroplast, colonial, colony, daughter, division, drop, education, educational, fauna, flora, freshwater, gonats, grand, green, lab, laboratory, lesson, life, macro, micro, microbiology, microscope, microscopic, nature, phytoplankton, plankton, pond, primitive, protozoa, protozoan, reproduction, science, spherical, volvox, waste, water, wimperkugel, zygnematophyceae, zygote,