Word: bacterias
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Other important constructive activities of bacteria...
...half century of living under the tutelage of Pasteur and his successors has taught us that most disease is caused by " deadly " bacteria* and has inspired a healthy fear of the teeming microbe world. It may come as a surprise to many to find that the "pathogenic" (disease-producing) germs are relatively few in number, and their influence is far outweighed by the " good germs," whose action is not only beneficent but even essential to the maintenance of the human species. Dr. Arthur I. Kendall, professor of bacteriology, Dean of Northwestern University Medical School, and author of Bacteriology-General, Pathological...
...best work the bacteria do is the demolition of organic compounds (human and animal waste, dead bodies and plants) into simpler nitrates and carbonates - forms which plants can utilize again. Without the participation of microbes in this cycle, life upon this planet would inevitably cease. Without them, civilized communities would long ago have been overwhelmed in their own waste products. Spread upon the surface of the earth, these become harmless through microbic activity. These upper layers of the soil are the ancestral home of the bacteria, where they are concentrated most thickly. Germs which break down organic matter...
...generations (24 hours), the descendants of one parent cell would number more than 78 octillions. (There are only 31 trillion seconds in a million years!) These unthinkable populations are held in check, however, by competition, lack of food, poisons, etc. At a moderate estimate, 30 trillions of bacteria are excreted from one human body each day. Yet these 30 trillions weigh, on the average, only two ounces. The biggest known microbe is the bacillus bütschlii (found in the cockroach), which may be 50 microns (one 500th of an inch) in length and about one-tenth as wide. Among...
...Their chemical use to identify and standardize carbohydrates, particularly sugars (the favorite food of bacteria...