One fourth means (one half) of (one half) .
So the 18 months must be two half-lifes.
The half-life of this particular isotope is 9 months.
Answer:
4
Explanation:
Because all the living things need carbon to make protein,carbohydrates,lipids
Answer:
The answer is 0.2
Explanation:
You subtract 8.05 - 7.85 = 0.2
Answer:
First, the last picture
second, the third picture
third, the second or first (the picture is blurr so i dunno)
then the last is, the fourth.
sorry if wrong.
