Natural Selection Review
Flashcard
•
Science
•
8th Grade
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
What is natural selection?
Back
Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.
2.
FLASHCARD QUESTION
Front
What are adaptive traits?
Back
Adaptive traits are characteristics that enhance an organism's ability to survive and reproduce in its environment.
3.
FLASHCARD QUESTION
Front
What is a mass extinction?
Back
A mass extinction is a widespread and rapid decrease in the biodiversity on Earth, typically characterized by the extinction of a large number of species in a short period.
4.
FLASHCARD QUESTION
Front
How do scientists study past extinctions?
Back
Scientists study past extinctions by analyzing the fossil record, which provides evidence of species that existed and their extinction events.
5.
FLASHCARD QUESTION
Front
What can lead to extinction?
Back
Extinction can be caused by factors such as habitat destruction, climate change, overexploitation, and introduction of invasive species.
6.
FLASHCARD QUESTION
Front
Why is genetic variation important in a population?
Back
Genetic variation is important because it increases the chances that some individuals will survive environmental changes and challenges.
7.
FLASHCARD QUESTION
Front
What is the role of mutations in evolution?
Back
Mutations are changes in DNA that can create new traits, which may be beneficial, neutral, or harmful, and contribute to the process of evolution.
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