Algunos factores necesarios para la formación de petroleo pueden ser: (elija una o varias respuestas segun usted considere)

Presencia de restos orgánicos

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Elevadas presiones

Extracción de aceites vegetales

Presencia de bacterias aeróbicas

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explanation:

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brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: