
Earth's Geological Timeline-CFU
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What are fossils?
Back
Fossils are traces of organisms that have been preserved in rock, often formed when dead organisms are buried quickly and undergo mineralization.
2.
FLASHCARD QUESTION
Front
What is the process of fossilization?
Back
Fossilization occurs when dead organisms are buried quickly, preventing decay, and over millions of years, their remains are turned into stone.
3.
FLASHCARD QUESTION
Front
Which Era is known as the age of dinosaurs?
Back
The Mesozoic Era is known as the age of dinosaurs.
4.
FLASHCARD QUESTION
Front
What does 'mass extinction' mean?
Back
Mass extinction refers to the loss or death of many different species in a short time period.
5.
FLASHCARD QUESTION
Front
Which Era is referred to as the 'age of fish'?
Back
The Paleozoic Era is referred to as the 'age of fish'.
6.
FLASHCARD QUESTION
Front
What organism is responsible for the Great Oxygenation Event?
Back
Cyanobacteria are responsible for the Great Oxygenation Event around 2.5 billion years ago.
7.
FLASHCARD QUESTION
Front
What is the significance of the Cambrian Explosion?
Back
The Cambrian Explosion marks a period of rapid diversification of life forms, leading to the emergence of many major groups of animals.
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