This worm species is dark red or violet-red and striped with antero-posterior and dorso-ventral gradient. Its body is divided into rings or metamerisms, which are visible at naked eye. They are about 8-10 cm long and 3-5 mm in diameter.
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Plantae & Fauna
It has been seen that aquatic plants play a transcendent role in the conservation of ecosystems,
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Photography: Cristopher Gonzalez https://creativecommons.org/.
Due to the activities of human beings, several species have been extinct and many others are endangered;
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The Ecological Reserve of Pedregal de San Angel in Mexico City has a particular landscape due to its spatial
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