3093534
Descripción
Test por PEDRO ALVAREZ JIMENEZ, actualizado hace más de 1 año
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Creado por PEDRO ALVAREZ JIMENEZ
hace más de 9 años
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Pregunta 1
Pregunta
1) When do we have the first certainty of life?
Respuesta
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Archean eon
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Proterozoic eon
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Hadean eon
Pregunta 2
Respuesta
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25 billion years
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2.5 billion years
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2.5 million years
Pregunta 3
Pregunta
What happened with the oxygen first released by cyanobacteria?
Respuesta
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It began to be used by living things
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It began to saturate the iron
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It killed the rest of living things
Pregunta 4
Pregunta
What type of record do we have to use for knowing when oxygen was accumulated first?
Respuesta
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Geological records
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Environmental records
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Fossil records
Pregunta 5
Pregunta
What was GOE (great oxygenation event)?
Respuesta
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An increasing of atmospheric oxygen 4.8 million years ago
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It becomes an oxygen rich enough environment for eukaryotic cells
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The mayor increasing of oxygen ever in our planet
Pregunta 6
Pregunta
Why GOE is also known as the “Oxygen Catastrophe”
Respuesta
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It produced the biggest fire ever
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It oxidized all living things
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It killed next to all anaerobic living things (greatest extinction ever)
Pregunta 7
Pregunta
Why U.V radiation prevent from life arising on land?
Respuesta
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It avoided aquatic living things from come out from water
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It produced important damage on DNA
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It produced sunburn on living things
Pregunta 8
Pregunta
What element permits us to live on land nowadays?
Respuesta
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The greenhouse effect
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The ozone layer
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The high concentration of O2
Pregunta 9
Pregunta
What is the relationship between GOE and U.V radiation that allow us to dwell on land?
Respuesta
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The ozone/oxygen cycle
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The oxygen/U.V radiation interaction
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The oxygen/ozone interaction
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