DNA, also known as deoxyribonucleic acid, is the molecule that contains the genetic code of organisms; a genetic code that determines all the characteristics of a living thing.
Compare it to respiration in the human body or like how a car converts fuel to work or how a machine works because of electricity
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their fins or webbled feet hels them to move and search food to eat .
Fermentation if oxygen is not present
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Scientists think that geographic isolation is a common way for the process of specification to begin: rivers change course, mountains rise, continents drift, organisms migrate, and what was once a continuous population is divided into two or more smaller populations. ... This may or may not be sufficient to cause specification.
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