Half life is the period of time it takes for one-half of the atoms of an original isotope to decay.
In this example we have: where n= the number of half lives.
Thus:
From this equation n=3. The answer to your question is: 3 half lives have passed which gives the meteorite an age of 4.5*3= 13.5 billion years.
Differentiate between Ureter and Urethra based on their function. Ureter carries urine from the kidney to urinary bladder. The function of the urethra is to carry urine from the urinary bladder to outside the body
The answer is D. 7. I hope this helps :)
Answer:
D. 1, 2, and 3
Explanation:
Caldwell method explains that the radiographer must be able to see only petrous pyramids in lower third of the orbits, and also visualize similar distance from the lateral border of the skull to the lateral rim of the orbit bilaterally with symmetrical petrous pyramids when evaluating a PA axial projection of the skull with a 15-degree caudal angle.
This process is called emigration. It is a process where a part of the population goes outside its boundaries or zone in order to allow the expation of such population, when for natural state has become too large or threat the balance of the biomed. Immigration, on the other hand, is when outside member of different population come into another population.