Biosfera Flashcards

1
Q

Edad del Universo

A

15 mil millones de años

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2
Q

Edad de la Tierra

A

4,6 mil millones de años

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3
Q

Precámbrico

A

Hadeano: 4.6 BA - 4 BA
Arqueano: 4-2.5 BA
archeas y estromatolitos
Proterozoico; 2.5-541 MA

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4
Q

Paleozoico

A

Devónico; 419-358 MA
Carbonífero: 358-298 MA
Pérmico: 298-252 MA
Triásico: 252-201 MA
Jurásico;201-145 MA
Cretácico; 145-66 MA

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5
Q

Cenozoico

A

Terciario: 66-2.5 MA
70% de la flora actual
80% de los reptiles
Cuaternario: 2.5- Actualidad

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