Answer:
three half-lives
Explanation:
Converting 12.5% to decimal gives 0.125
If one half life is 0.5.
0.5*0.5*0.5 gives 0.125
Thus 3-half lives has been elapsed
Answer:
1. provide protection to residents living near the ocean by acting as a buffer against the high winds and waves of powerful storms or rough seas.
2. many benefits of the vitamin D including stronger bones, healthier teeth, and helping your immune system function properly.
3. it can also help the economy.
Explanation:
Actually, the answer is A. I just took this test and got it right.
