Mass Extinction and Biodiversity Practice
Flashcard
•
Biology
•
12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a mass extinction?
Back
A mass extinction is a widespread and rapid decrease in the biodiversity on Earth, characterized by the extinction of a large number of species in a relatively short period of geological time.
2.
FLASHCARD QUESTION
Front
Which period's end is marked by the extinction of the dinosaurs?
Back
Cretaceous
3.
FLASHCARD QUESTION
Front
How many mass extinctions have occurred in Earth's history?
Back
There have been five mass extinctions in Earth's history.
4.
FLASHCARD QUESTION
Front
What was the first mass extinction event?
Back
The End Ordovician mass extinction.
5.
FLASHCARD QUESTION
Front
What does biodiversity refer to?
Back
Biodiversity, or biological diversity, refers to the variety of different species in a given area.
6.
FLASHCARD QUESTION
Front
What is an example of a human disturbance to ecosystems?
Back
Deforestation.
7.
FLASHCARD QUESTION
Front
What is sympatric speciation?
Back
Sympatric speciation is the process by which new species evolve from a single ancestral species while inhabiting the same geographic region, often due to adaptations to different ecological niches.
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