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The area of land drained by this river and its tributaries is best described as the river’s
14N
3 p.m.
3
decay at a regular rate
biggest particles near point B then gradually smaller as you go into the ocean
watershed
Mastodont
2 half-lives
Radioactive carbon-14 is often useful in determining the absolute age of geologic samples because radioactive isotopes
14N
3 p.m.
3
decay at a regular rate
biggest particles near point B then gradually smaller as you go into the ocean
watershed
Mastodont
2 half-lives
Which bar graph would best represent the rate of water infiltration through tubes A, B, and C?
14N
3 p.m.
3
decay at a regular rate
biggest particles near point B then gradually smaller as you go into the ocean
watershed
Mastodont
2 half-lives
How many half-lives have passed if a sample contains 25% of its original carbon-14?
14N
3 p.m.
3
decay at a regular rate
biggest particles near point B then gradually smaller as you go into the ocean
watershed
Mastodont
2 half-lives
Which disintegration product is represented on the graph?
14N
3 p.m.
3
decay at a regular rate
biggest particles near point B then gradually smaller as you go into the ocean
watershed
Mastodont
2 half-lives
What is the approximate time of day when the Sun is at position C?
14N
3 p.m.
3
decay at a regular rate
biggest particles near point B then gradually smaller as you go into the ocean
watershed
Mastodont
2 half-lives
The age of which index fossil could be determined by using carbon-14?
14N
3 p.m.
3
decay at a regular rate
biggest particles near point B then gradually smaller as you go into the ocean
watershed
Mastodont
2 half-lives
Which cross section represents the most likely pattern of sediments deposited where the river enters the ocean at location B?
14N
3 p.m.
3
decay at a regular rate
biggest particles near point B then gradually smaller as you go into the ocean
watershed
Mastodont
2 half-lives
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