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Differences Between Bacteria and Viruses. There are a number of differences between bacteria and viruses. Viruses, for example, are as much as 10 to 100 times smaller than bacteria. ... While the RNA and DNA of viruses are enclosed in the protein coat, in bacteria, the genetic material floats in the cytoplasm.
A rising Mississippi River bottom could change the river's course in a future flood. ... "If the structures were not built and all, the river would eventually change course to that of the Atchafalaya River," said Russell Beauvais, Operations Manager for the U.S. Army Corps of Engineers.
Butterflies are among the most vibrant insects, with colorations sometimes designed to deflect predators. New research shows some of these defenses may be driven by enemies one-tenth their size.