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Which of the following is a technique used in absolute dating?
 
Radiocarbon dating
 
index fossil correlation
 
Original horizontality
 
Superposition
Examine the following diagram. Place the layers in order from oldest to youngest.
 
A,B,D,C
 
D,C,B,A
 
D,A,B,C
 
C,B,A,D
A sample of rock is found to contain 100 grams of a parent isotope. How many grams of the parent isotope will remain after two half-lives?
 
25
 
50
 
75
 
100
Describe one of the many interesting facts about Katelyn.
She is a ghostwriter.
What is Katelyn's favorite genre of music to listen to?
She does not have a favorite. She listens per her mood.
Does Katelyn have any pets?
yes a dog
What is Katelyn's favorite Anime?
she is a true anime lover and can never have just one. she likes demon slayer, promised neverland but only s1
When did Katelyn start writing her latest novel?
11 years old
What is Katelyn's favorite activity?
writing novels
What is Katelyn's favorite color?
Black
Why is natural selection a mechanism for biological change?
It drives evolutionary change by passing on traits and becoming dominant version of species.
How long would it take 250 grams of Carbon 14 to become 62.5 grams? (HLT 5,730) How many half lives have passed?
11,460 years; 2
Describe half-lives as it applies to radiometric dating
The time it takes for half of the parent isotope to decay
What is an example of Relative dating used in science?
scientists relate rock layers to each other using index fossils; superpositioning
What is paleontology?
the study of once living things; the branch of science concerned with fossil animals and plants.
True or False? -Fossils are bones from long ago.
False- Fossils can form from bones, but the process of fossilization gradually transforms the bones—or other remnants of the organism—into rock.
Did mammals exists with Dinosaurs?
yes. Small ones similar to rats; Megazostradon
Name one geologic and one biologic from Jurassic period
continents began to move, Atlantic ocean opens; Dinosaurs existed, Fossil fuels are forming
Explain natural selection
Only the strong survive and make offspring
Describe adaptation
adjustments species make to survive changes in the environment
Explain evolution
species of organisms change over time
Compare relative and absolute time
relative is approximate based on comparison; absolute is exact in minutes, days, seconds, years, etc..
How are scientists able to get an exact age of a fossil?
By analyzing the radioactive decay of that fossil.
What is a geologic timescale?
A model of events organized by major geological and biological events.


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