Title rated 4.7 out of 5 stars, based on 15 ratings(15 ratings)
Book, 2015
Current format, Book, 2015, Available .
Book, 2015
Current format, Book, 2015, Available . Offered in 0 more formats
Though most of them are too small to be seen with the naked eye, bacteria are everywhere. They appeared on Earth more than 3 billion years before the first dinosaurs. Some bacteria cause deadly diseases, but many of them are helpful to us. They fertilize the soil by breaking down dead material, and they are an essential…
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