Answer:
The answer is below
Explanation:
The half life of a substance is the time required by that substance to reduce to half of its initial value. The half life is calculated using the formula:
![N(t)=N_o(\frac{1}{2} )^\frac{t}{t_\frac{1}{2} } \\\\where\ N(t)=quantity\ of\ substance \ remaining, N_o=initial\ quantity\\of\ substance, t=time\ and \ t_\frac{1}{2}=half\ life\ of\ substance](https://tex.z-dn.net/?f=N%28t%29%3DN_o%28%5Cfrac%7B1%7D%7B2%7D%20%29%5E%5Cfrac%7Bt%7D%7Bt_%5Cfrac%7B1%7D%7B2%7D%20%7D%20%5C%5C%5C%5Cwhere%5C%20N%28t%29%3Dquantity%5C%20of%5C%20substance%20%5C%20remaining%2C%20N_o%3Dinitial%5C%20quantity%5C%5Cof%5C%20substance%2C%20t%3Dtime%5C%20and%20%5C%20t_%5Cfrac%7B1%7D%7B2%7D%3Dhalf%5C%20life%5C%20of%5C%20substance)
Given that t = 87 years, half life = 29 years, therefore the quantity of strontium-90 left is:
![N(t)=N_o(\frac{1}{2} )^\frac{87}{29} \\\\N(t)=N_o(\frac{1}{2} )^\frac{t}{t_\frac{1}{2} } \\\\N(t)=N_o(\frac{1}{2} )^3\\\\N(t)=\frac{1}{8} N_o](https://tex.z-dn.net/?f=N%28t%29%3DN_o%28%5Cfrac%7B1%7D%7B2%7D%20%29%5E%5Cfrac%7B87%7D%7B29%7D%20%5C%5C%5C%5CN%28t%29%3DN_o%28%5Cfrac%7B1%7D%7B2%7D%20%29%5E%5Cfrac%7Bt%7D%7Bt_%5Cfrac%7B1%7D%7B2%7D%20%7D%20%5C%5C%5C%5CN%28t%29%3DN_o%28%5Cfrac%7B1%7D%7B2%7D%20%29%5E3%5C%5C%5C%5CN%28t%29%3D%5Cfrac%7B1%7D%7B8%7D%20N_o)
That is one-eight of Strontium 90 would be left after 87 years
Answer:
The correct option is number 3. A deficit of appositional bone growth would not be life threatening.
Explanation:
Appositional bone growth can be defined as the thickening of the bones due to increase in the number of bone tissues at the surface. In this kind of bone growth, the diameter of the bone increases rather than the length of the bone. This can lead to deformation of the bone but it is not life-threatening.
Rest of the options 1, 2 and 3 are serious disorders and can eventually lead to death.
The claim is that most people of that descion have chosen the race and choice of either stopping or continuing, the claim is that with diagnostic studies diet might be better than normal but has 1000 more fiber than the leading brand. I hoped I helped :)
Answer:
Ecology is the study of interactions between organisms and their surround- ings including other organisms. Organisms grow, multiply, occupy different regions, compete with others for resources, prey upon others, transform into different species etc. Many interesting questions can be asked of this broad canvass.
Explanation: