Ключевые слова: air, allergy, antibiotic, background, bacteria, biochemistry, biological, biology, college, danger, dirty, disease, dish, education, food, fungal, fungi, fungus, green, growth, health, infection, macro, medical, medicine, micro, microbe, microbiology, microorganisms, mildew, mold, mould, natural, nature, old, petri, plant, quality, reproduction, research, risk, rotten, safety, science, scientific, spoiled, spore, spread, unhealthy,