Biology Chapter 17 History of Life and Fossils

Fossils of fish are found under land where cows now live. What does this tell you?

• the fish were dropped their by flying birds
• this land was once under the ocean
• farmers fed the fish to the cows
• fish used to live on land

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Why don't all living things become fossils?

• because some living things are too small
• because some living things are too big
• because some organisms are subject to catastrophism and others are not
• because environmental conditions have to be just right to prevent decaying

Which of the following is NOT an example of a fossil?

• a petrified dinosaur bone
• a footprint captured in mud
• a seashell found on the beach

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a scientist who studies fossils

• geologist
• biologist
• paleontologist
• chemist

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Gone forever. 

• trace fossil
• extinct
• preserved
• paleontologist

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Fossils usually provide paleontologists with information about each of the following except:

• An organism's structure
• An organism's DNA
• An organism's size
• Where the organism came from

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Most fossils are found in:

• Murky water
• Sedimentary rock
• Volcanic rock
• Ice

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The fossil record shows:

• Most organisms that ever lived on Earth are now extinct
• That only bones and teeth can become fossilized
• That only soft tissues are fossilized 
• DNA evidence of once living organisms

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A fossil is...

• a radioactive element used to determine the age of a rock layer
• the remains or evidence of a once-living organism
• only the hard parts of a organism
• only found in ice

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What is the process of biological change in organisms over time?

• Fossils
• Evolution
• Adaptation
• Species

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