Answer:
The person has been dead for approximately 15,300 years
Explanation:
<u>Available data</u>:
- The half-life of carbon 14 is 5,600 years
- The human skeleton level of carbon 14 is 15% that of a living human
To answer this question we can make use of the following equation
Ln (C14T₁/C14 T₀) = - λ T₁
Where,
- C14 T₀ ⇒ Amount of carbon in a living body at time 0 = 100%
- C14T₁ ⇒ Amount of carbon in the dead body at time 1 = 15%
- λ ⇒ radioactive decay constant = (Ln2)/T₀,₅
- T₀,₅ ⇒ The half-life of carbon 14 = 5600 years
- T₀ = 0
- T₁ = ???
Let us first calculate the radioactive decay constant.
λ = (Ln2)/T₀,₅
λ = 0.693/5600
λ = 0.000123
Now, let us calculate the first term in the equation
Ln (C14T₁/C14 T₀) = Ln (15%/100%) = Ln 0.15 = - 1.89
Finally, let us replace the terms, clear the equation, and calculate the value of T₁.
Ln (C14T₁/C14 T₀) = - λ T₁
- 1.89 = - 0.000123 x T₁
T₁ = - 1.89 / - 0.000123
T₁ = 15,365 years
The person has been dead for approximately 15,300 years
Comparative anatomy is the study<span> of similarities and differences in the anatomy/structures in organisms of </span>different<span> species.
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As the coach of the team, it is good advice for athletes to keep strictly to their training schedule. Consistency is more important than periodic but prolonged training. This is because the latter tends to wear out the athlete physically and creates longer come-back inertia.
<h3>What is a Training Schedule</h3>
A Training Schedule is a plan that you must design to ensure that you support a team of athletes with the required amount of training. A properly designed schedule will contain:
- Calendar of training to be introduced to the students;
- Details of the training and other related agenda
- List of trainees and trainers
See the link below for more about Training Schedule:
brainly.com/question/3524635
<h3 />
Does this organism have spots
<h2>The quality and quantity of DNA in cells remain the same from generation to generation.</h2>
Explanation:
- As all organisms depend on their DNA to live, and any changes in the amount or quality of DNA. It will lead to mutations or death of the organism.
- If DNA is changed then it will be difficult for the chromosomes to match up and offspring will not be produced.
- The quality must be maintained. Otherwise other system in the body will not work properly.
