Ключевые слова: abstract, air, aqua, backdrop, background, beauty, biology, biotechnology, blue, bubble, cell, chemical, chemistry, clean, clear, concept, cool, drink, drop, droplet, experiment, flow, fluid, foam, fresh, freshness, glass, health, jelly, liquid, macro, medical, medicine, microbiology, mineral, molecule, molecules, nature, oxygen, pattern, pure, science, scientific, shampoo, soap, splash, texture, transparent, water, wet,