Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
_____ is the process by which modern organisms have descended from ancient organisms.
|
Evolution
|
|
|
A ____ _____ is a well-supported testable explanation of why things occur in the natural world.
|
scientific theory
|
|
|
What occurred after Darwin's travel on the Beagle?
|
Darwin collected evidence that led him to propose a revolutionary hypothesis about the way life changes over time.
|
|
|
Darwin's hypothesis led to what theory?
|
The theory of evolution.
|
|
|
The preserved remains of ancient organisms are called _____.
|
fossils
|
|
|
How did the tortoises on the Galapagos Islands differ?
|
The shells of the tortoises differed according to the island they inhabited.
|
|
|
How did the birds differ on the islands?
|
The birds' beak were different according to the island they inhabited.
|
|
|
Why did the tortoises and birds have different physical traits?
|
The different traits (shells and beaks) were survival adaptations to their environment.
|
|
|
Why is evolution considered a theory?
|
Because the hypothesis is supported by a hugh body of evidence.
|
|
|
How might nest-building be an adaptation that helps ensure reproductive fitness (or success)?
|
Each bird knows it predators and the environmental dangers of its surroundings. It builds its nest as a place of protection and shelter for the eggs.
|
