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svp [43]
2 years ago
6

How many half-lives have lapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-14

Biology
1 answer:
stich3 [128]2 years ago
8 0

2 half-lives have elapsed to yield  125 atom of the original sample

Half of the amount of the radioisotope present at any given time will undergo  spontaneous disintegration during the succeeding 5730 years. In other words , after 5730 years ,only half of the original amount of 14 c remains in a sample of organic material . Imagine  that you start out with 100 grams of carbon 14 . The half -life is the time it takes for half  of given amount of isotope to decay .

learn more about how many half- lives have lapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N- 14

brainly.com/question/2320811

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Explain nutrient recycling and importance of water cycle​
lakkis [162]

Answer:

The nutrient cycle describes the use, movement, and recycling of nutrients in the environment. Valuable elements such as carbon, oxygen, hydrogen, phosphorus, and nitrogen are essential to life and must be recycled in order for organisms to exist.

Explanation:

The nutrient cycle describes the use, movement, and recycling of nutrients in the environment. Valuable elements such as carbon, oxygen, hydrogen, phosphorus, and nitrogen are essential to life and must be recycled in order for organisms to exist.

6 0
3 years ago
A person who has cerebrospinal fluid draining from the ear probably has a fracture of the __________ bone. occipital zygomatic f
Tanzania [10]

A person who has cerebrospinal fluid draining from the ear probably has a fracture of the temporal bone.

<h3>What is Cerebrospinal Fluid?</h3>

All animals have cerebrospinal fluid (CSF), a transparent, colorless bodily fluid that is present in the tissue that covers their brains and spinal cords.

Specialized ependymal cells in the choroid plexus of the brain's ventricles create CSF, which is then absorbed in arachnoid granulations. About 125 mL of CSF are present at any given moment, and 500 mL are produced daily. The CSF protects the brain inside the skull mechanically and immunologically by acting as a shock absorber, cushion, or buffer. The cerebral autoregulation of cerebral blood flow is another essential role played by CSF.

The ventricular system and subarachnoid space, which are located surrounding and inside the brain and spinal cord, respectively, are occupied by CSF.

Learn more about CSF with the help of the given link:

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#SPJ4

5 0
2 years ago
Ocean currents occur<br> because water has different<br> amounts of salt.<br> True of False ?
harkovskaia [24]

Answer:

False

Explanation:

Ocean currents are driven by wind, water density differences, and tides. Oceanic currents describe the movement of water from one location to another. Currents are generally measured in meters per second or in knots (1 knot = 1.85 kilometers per hour or 1.15 miles per hour).

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3 years ago
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Schach [20]

Answer:

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6 0
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Brut [27]
<span>A. Iodine is located in Period 5, Group 17 and is classified as a nonmetal.  ....................................................................................................................................................................</span>
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3 years ago
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