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Interview

Eras geológicas

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Información esquematizada sobre las eras geológicas, sus respectivos períodos y características importantes y generales. Esquema claro y sintetizado.

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  • July 21, 2021
  • 4
  • 2020/2021
  • Interview
  • Unknown
  • Unknown
  • Secondary school
  • 5
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HÁDICO 1
Eón más antiguo
La Tierra soportó numerosos
asteroides
Las capas externas del planeta
se fundieron
Comprende hace aprox. 4.5
mil millones de años, hasta
hace 4 mil millones de años 2
4
ARCAICO
Segundo eón más antiguo
FANEROZOICO Comenzó hace unos 4000
Desde hace unos 542 millones de millones de años
años al presente ERAS GEOLÓGICAS Finalizó unos 2500 millones
Aparición de los primeros de años atrás
animales de caparazón duro Exhibe las primeras
Abundancia y diversidad de evidencias de vida primitiva
estos organismos en el planeta


PROTEROZOICO
Comprende alrededor de 2500 millones de
años
3 La atmósfera acumuló gran cantidad de
oxígeno en comparación con los eones
anteriores
Ocurrieron las primeras glaciaciones
Emergieron los primeros organismos
pluricelulares

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