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Opabinia was a stem group arthropod. They lived in British Colombia, Canada, and had many strange features. They utilized these features for swimming, and hunting. When found, Opabinia strongly supported the idea of the Cambrian Explosion. The discovery of Opabinia also led to the realization of hor little scientists knew about soft-bodied animals.

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paleobiology.si.edu/burgess/opabinia.html
prehistoric-wildlife.com/species/o/opabinia.html
en.wikipedia.org/wiki/Opabinia

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When found the Opabinia supported the hypothesis of the "Cambrian Explosion". The Cambrian Explosion is a hypothesized period of time, in which rapid evolution occurred. The finding of Opabinia also helped scientist to realize how little they actually knew about soft bodied animals, as they rarely left fossils.

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Opabinia are thought to have lived on soft riverbeds, and use their proboscis to dig into the sand in search of worms. It is also believed that Opabinia used their side lobes to propel themselves around in the water.

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Opabinia are an extinct stem group arthropod. During their lifetime they were found in the Middle Cambrian Burgess Shale Lagerstatte of British Colombia, Canada. Opabinia were a crustacean related animal with five eyes, a flexible proboscis, and pincers.

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Molecular Evolution is the differences in the molecular similarities of multiple organisms.

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Organism may look similar during embryological development.

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Structure that seem to have no use in one species, but are useful in other species.

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Homologous structures are parts that are similar in structure, but have different uses throughout different species.

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Genetic Drift is the random change in a species genetic makeup, and is caused by the death. Through this process, genes are lost, as the species doesn't get a chance to carry them on.

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Sexual Selection is a special type of natural selection, through which mating is chosen based on

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Convergent Evolution is when two species become more and more like each other through the process of evolution.

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Parallel Evolution is the similar evolution of two different species, caused by their lifestyles.

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Divergent Evolution is the process of evolution through which two species start from one, and become less alike over time.

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Gene flow is the spread of genes from one species to another. This commonly occurs through migration, as migrating animals may bring genes into an area where they didn't exist before.

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Mutation occurs when the gene of an offspring is altered. If the altered gene helps the offspring to survive, it will most likely become common throughout the species

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The process through which organisms for suited to their environment are the ones that survive, and reproduce.

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Stands for variation, inheritance, selection, time. It is the process through which evolution occurs.