What is the approximate time span of the history of life on Earth?
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Approximately 3.5 billion years.
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What is the approximate time span of the history of life on Earth?
Approximately 3.5 billion years.
What type of cells emerged first during the Precambrian Era?
Prokaryotic cells (bacteria and archaea).
What is evolution?
The process by which different kinds of living organisms develop and diversify from earlier forms.
What significant event occurred during the Cambrian Period?
The Cambrian Explosion, a rapid diversification of life forms.
What are prokaryotic cells?
Simple, unicellular organisms without a nucleus.
What are the key divisions of the Geological Time Scale?
Eons, Eras, Periods, and Epochs.
What significant advancements occurred during the Silurian Period?
Development of vascular plants and early terrestrial ecosystems.
What are eukaryotic cells?
More complex cells with a nucleus.
What is a mass extinction?
A significant and rapid decrease in biodiversity.
When did the first life forms appear on Earth?
Approximately 4.6 billion years ago.
What significant geological formation occurred during the Permian Period?
The formation of the Pangaea supercontinent.
When did eukaryotic cells appear?
Around 2.1 billion years ago.
What does the fossil record provide evidence of?
The history of life and evolutionary changes over time.
What time frame does the Precambrian Era cover?
4.6 billion years ago to 541 million years ago.
What is known as the Age of Fishes?
The Devonian Period, when the first amphibians appeared.
What major event characterized the Carboniferous Period?
Extensive forests and the formation of coal deposits.
What is the Cambrian Explosion?
A rapid increase in the diversity of life forms.
What was the major development during the Ordovician Period?
Marine life flourished and the first evidence of land plants appeared.
What was the largest mass extinction event in Earth's history?
The Permian-Triassic extinction event.
