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A great cormorant swimming. Aquatic locomotion or swimming is biologically propelled motion through a liquid medium. The simplest propulsive systems are composed of cilia and flagella. Swimming has evolved a number of times in a range of organisms including arthropods, fish, molluscs, amphibians, reptiles, birds, and mammals.
In 1587, Everard Digby also wrote a swimming book, claiming that humans could swim better than fish. [9] Digby was a Senior Fellow at St. John's College, Cambridge, and was interested in the scientific method.
Swimming relies on the nearly neutral buoyancy of the human body. On average, the body has a relative density of 0.98 compared to water, which causes the body to float. However, buoyancy varies based on body composition, lung inflation, muscle and fat content, centre of gravity and the salinity of the water.
For humans, we're 99.9 percent similar to the person sitting next to us. The rest of those genes tell us everything from our eye color to if we're predisposed to certain diseases.
Swimming is an individual or team racing sport that requires the use of one's entire body to move through water. The sport takes place in pools or open water (e.g., in a sea or lake). Competitive swimming is one of the most popular Olympic sports, [1] with varied distance events in butterfly, backstroke, breaststroke, freestyle, and individual ...
This means that unlike humans, who may still be able to create a protein if the gene becomes mutated (since the human genome has an extra copy in each cell), a bacterium will be completely unable to create the protein if its gene incurs an inactivating mutation. [134] Bacterial genomes usually encode a few hundred to a few thousand genes.
The chlorine isn't what causes the irritation in your lungs; it's pee. There's actually been an increase in disease outbreaks from public swimming pools, according to Beach, thanks in large part ...
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