Germs Make Us Sick - Carla Delos - diskuze

Microorganisms are among the main causes of disease, but most of us know very little about what they do and how they infect us and grow. These creatures are microscopic but they can make us very sick and even kill us. Discover the range of natural and technological defenses we have against them, and why we can never let our guard down when they are around.
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