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Explanation: excretory system
The kidneys do a lot, but their most important job is to take waste out of the blood and make urine . The urinary tract takes this waste out of the body when a person
If the 14C level of fossils is 73% compared to living organisms. It will be 2602 years.
<h3>What is radiocarbon dating? </h3>
This method is used to estimate the relative age of carbon-based materials. This is done usually for fossils which originate from living organisms.
This age is estimated by estimating the percentage of carbon-14 isotopes in the fossil. This is done by comparing this percentage to a reference standard used internationally. This method is of tremendous use in palaeontology. It has also found its use in hydrology, oceanography, geology etc.
Fossil age is determined by
At = (Ao) x (1 - 0.5)^(t/h)
Here, At/Ao = 0.73
So, 0.73 = 0.5^(t/5730)
Therefore, t = 2602 years
Read more about carbon dating, here
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Earth's upper atmosphere controls the radiation that escapes to space.
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It is also one of the world's most important commercial waterways and one of North America's great migration routes for both birds and fishes. Native Americans lived along its banks and used the river for sustenance and transportation.
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