Answer:
C. Concentration gradient
Answer:
I think the answer is determining infectivity of a virus
Explanation:
hope that it will help you
A double layer of phospholipids
<span>You
are right in that bananas contain potassium and K-40 is a naturally
occurring potassium isotope AND the K-40 in an average banana does decay
at a rate of about 31 ATOMS per second (half-life is > 1 billion
years). This is an extremely low level of radiation and nothing to worry
about. Bananas will definitely NOT cause a "nuclear winter."</span>