The Answer is A. The presence of sodium potassium pumps has nothing to do with water moving in and out of cells.
A.
<span>f(-2) = 2^(-2 - 2) </span>
<span>f(-2) = 2^(-4) </span>
<span>f(-2) = 1/2^4 </span>
<span>f(-2) = 1/16</span>
Flu<span>, </span>hepatitis A<span>, </span>hepatitis B<span>, </span>chickenpox<span>, </span>herpes zoster<span> (</span>shingles<span>), </span><span>cancer</span>
Answer: A
Explanation: Its three leafs and tear drop shaped.
The control group outs the one that you don't change. The reason you don't change it is because you use it as a comparison with the other groups.