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15
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How do scientists visualize what extinct ancestors looked like?
By combining DNA from living species.
By using skeletal and fossil evidence.
By guessing based on modern animals.
By studying ancient paintings.
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15
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What is the main reason why blue whales are not considered fish?
They do not live entirely underwater.
They are too large to be fish.
They eat different types of food than fish.
Their body structure is more similar to mammals than to f
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baam
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seesaw
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fairy
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banana
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15
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What does the presence of shared body structures between species suggest?
They have no differences.
They have similar diets.
A shared evolutionary history.
They evolved at the same time.
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banana
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star
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rocket
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banana
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15
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What do the small leg bones in blue whales indicate?
They serve no evolutionary purpose.
Whales once had ancestors that walked on land.
Whales are still evolving into land animals.
They are used for swimming.
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15
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How do whales and humans demonstrate their mammalian connection?
By laying eggs and having shiny scales.
By walking on land regularly.
By living in the ocean.
By having lungs, producing milk, and similar bone structures
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15
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Which of the following is a characteristic shared by humans and blue whales?
Both have scales on their bodies.
Both have lungs for breathing air.
Both breathe through gills.
Both lay eggs.
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15
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What is the significance of all living things sharing basic traits like cell structure and DNA?
It explains why mammals are the most complex organisms.
It shows that all life evolved from a common ancestor.
It demonstrates how whales are more advanced than fish.
It proves that all life on Earth is unrelated.
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15
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What is inferred about the common ancestor of mammals, including humans and whales?
It lived about 4 billion years ago.
It had a skeleton identical to humans.
It was a large aquatic animal.
It had structures similar to modern mammals.
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seesaw
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magnet
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shark
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thief
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15
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According to the article, what was the appearance of the earliest mammalian ancestor?
A single-celled organism.
A small, mouse-like creature.
A fish with gills and fins.
A large blue whale-like animal.
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15
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What evidence do paleontologists use to trace evolutionary connections between species?
Studying their diets.
Comparing the color of their skin.
Observing the habits of modern animals.
Fossilized remains and DNA analysis.
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thief
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fairy
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rocket
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banana
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