Why is carbon used to date things that were once living?A.Carbon is not toxic to living things.B.The half-life of carbon depends on age.C.Living things take in carbon from food.D.The amount of carbon is easy to measure.
Question
Why is carbon used to date things that were once living?A.Carbon is not toxic to living things.B.The half-life of carbon depends on age.C.Living things take in carbon from food.D.The amount of carbon is easy to measure.
Solution
Carbon is used to date things that were once living because of the following reasons:
A. Carbon is not toxic to living things: This is true. Carbon, in the form of carbon dioxide, is a fundamental building block of life and is not toxic to living organisms. This allows it to be incorporated into the tissues of living organisms without causing harm.
B. The half-life of carbon depends on age: This is not entirely accurate. The half-life of a specific isotope of carbon, Carbon-14, is constant and does not depend on the age of the object. However, the amount of Carbon-14 decreases over time due to radioactive decay, which is why it can be used to date organic material.
C. Living things take in carbon from food: This is correct. Living organisms continuously exchange carbon with their environment through the process of eating, breathing, and photosynthesis (in the case of plants). When an organism dies, it stops exchanging carbon with its environment, and the Carbon-14 it contains begins to decay. By measuring the amount of Carbon-14 left in a sample, scientists can estimate when the organism died.
D. The amount of carbon is easy to measure: This is also true. With modern technology, it is relatively easy to measure the amount of Carbon-14 in a sample, which makes carbon dating a practical method for determining the age of organic material.
Similar Questions
Explain how the process of carbon dating works, and then justify why you could or could not use it in this case.
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The oldest POSSIBLE source of biogenic carbon is roughly how old?Group of answer choices4.1 thousand years old4.1 billion years old4.1 million years old4.1 trillion years old
What kind of radioactive element is useful for dating an object?A.One that is present in very small amountsB.One that does not undergo transmutationC.One that decays very quickly into a stable formD.One with a half-life close to the age of the object
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