Use the chart number one carbon dioxide is converted to sugar is used for food. Number two carbon chopped in fossil fuels is con
verted to carbon dioxide. Number three organic carbon is converted to fossil feels. Number for carbon dioxide is converted to carbonates. Number five sugar is broken down and converted to carbon dioxide
1 answer:
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Answer:
3.9 billion years
Explanation:
The half-life of potassium-40 is the time it takes for half of it to decay.
After one half-life, half of the original amount will remain.
After a second half-life, half of that amount will remain, and so on.
We can construct a table as follows:
We see that the mass will drop to 10 g after three half-lives.
1 half-life = 1.3 billion years
3 half-lives = 3.9 billion years