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What is the residence time of carbon in the reservoir that leads to the respiration process?
The residence time of carbon in the reservoir that leads to the respiration process, primarily in living organisms, typically ranges from days to years. This is due to the continuous cycling of carbon through processes like photosynthesis, respiration, and decomposition. In ecosystems, carbon is quickly exchanged among the atmosphere, biosphere, and soils, resulting in relatively short residence times compared to geological carbon reservoirs, which can range from thousands to millions of years.
What is the cycle which includes an underground reservoir in the form of fossil fuels?
The cycle that includes an underground reservoir of fossil fuels is the carbon cycle. This cycle involves the exchange of carbon between the atmosphere, oceans, soil, and living organisms. Fossil fuels are formed from the remains of ancient plants and animals that were buried underground and transformed over millions of years.
What does not contain carbon from the bodies of plants and animals that died million of years ago?
coal
How do you carbon date rocks 10 million years old?
You cannot. Carbon dating is not useful for dating things more than about 50,000 years old. You would have to use a different radioisotope to date something 10 million years old. Potassium-Argon dating would work for some rocks.
Can carbon dating be used on bones a million years old?
No, there are no detectable levels of carbon-14 left in any sample older than roughly 40,000 years. Without carbon-14 in the sample, no date can be determined.
Which reservoir holds carbon the longest amount of time?
The deep ocean reservoir is thought to hold carbon the longest, with some estimates suggesting that carbon can reside in deep ocean waters for thousands of years before cycling back into the atmosphere. This is due to the vastness and depth of the oceans, which allow carbon to be stored for extended periods before being released back into the carbon cycle.
What reservoir of the carbon cycle changes the most and the quickest?
The atmosphere is the reservoir of the carbon cycle that changes the most and the quickest. It can experience rapid fluctuations in carbon dioxide levels due to human activities, such as fossil fuel combustion and deforestation, as well as natural processes like respiration and photosynthesis. These changes can occur on short timescales, ranging from days to years, making the atmospheric carbon pool highly dynamic compared to other reservoirs like oceans and geological formations.
When does the tyrannosaurus lived?
Late Cretaceous period, 65-100 million years ago. The scientific community isn't certain.
Why cant carbon fourteen be used to date a dinosaur fossil that is 1 million years old?
Carbon-14 has a half life of about 5,730 years, meaning that it can only date back to thousands of years old. also, the amount of carbon in the earth's atmosphere has been increasing since the beginning of time, so carbon dating is not a very good way to date fossils. Carbon dating only works on things that were once living.Scientists have determined that it would take 30,000 years for the carbon to reach equilibrium, and that the earth is less than 1/3 to equilibrium, so it follows that the earth is less than 10,000 years old.
How much carbon-14 would be left after 5700 years?
Carbon-14 has a half-life of approximately 5,700 years, meaning that after this period, half of the original amount of carbon-14 will have decayed. Therefore, if you start with a certain amount of carbon-14, after 5,700 years, you would have 50% of the original amount remaining. After another 5,700 years (a total of 11,400 years), 25% would remain, and so on. Thus, after 5,700 years, you would have half of the initial carbon-14 quantity left.
In the last 100 years what has added excess carbon dioxide to the atmosphere?
Power PlantsMachineryCarsThe burning of fossil fuels like coal, oil and natural gas, which releases extra carbon dioxide that has been underground for 300 million years.
Why would it be impossible to date an item that was 1000000 years old with c-14?
After about 50,000 years there is too little carbon-14 left in a sample to make accurate measurements. One million years is 20 times that limit, so there will be almost no carbon-14 left.
