All the water on the earth is the same water that has been here since
<h2><u><em>
BRAINLIST </em></u></h2>
I would pick the first option in the third option
<span>The half-life of 9 months is 0.75 years.
2.0 years is 2.0/0.75 = 2.67 half-lives.
Each half-life represents a reduction in the amount remaining by a factor of two, so:
A(t)/A(0) = 2^(-t/h)
where A(t) = amount at time t
h = half-life in some unit
t = elapsed time in the same unit
A(t)/A(0) = 2^(-2.67) = 0.157
15.7% of the original amount will remain after 2.0 years.
This is pretty easy one to solve. I was happy doing it.</span>
Hey :)
Air pollution
Hope this helps!
Good luck in your test :)
Answer:
the answer to this question is option A mark me as brainliest
mark me as brainliest
