What is a mass extinction event?
Extinction Practice Questions

Flashcard
•
Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A mass extinction event is a period in Earth's history when a significant number of species die out in a relatively short time due to environmental changes, catastrophic events, or other factors.
2.
FLASHCARD QUESTION
Front
How many mass extinction events have occurred in Earth's history?
Back
There have been 5 mass extinction events in Earth's history.
3.
FLASHCARD QUESTION
Front
True or False: Most species that have ever lived on Earth are now extinct.
Back
True
4.
FLASHCARD QUESTION
Front
What is one likely reason a species may become extinct after a major environmental change?
Back
There are not enough members of the species born with a trait necessary to survive in the new environment.
5.
FLASHCARD QUESTION
Front
How does genetic diversity affect a species' survival during environmental changes?
Back
Higher genetic diversity increases a species' chances of survival during environmental changes because it provides a greater range of traits that may be beneficial.
6.
FLASHCARD QUESTION
Front
Which of the following is NOT a reason a species may become extinct?
Back
Reproducing is NOT a reason a species may become extinct.
7.
FLASHCARD QUESTION
Front
What is habitat loss?
Back
Habitat loss is the destruction or alteration of the natural environment where a species lives, often leading to a decline in population and potential extinction.
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