Answer:
red blood cells (RBCs) misfolding and convert in sickle shapevfrom the donut with out hole shape.
<span>In the past, human populations were controlled by </span>Disease and Famine
D surface tension because, adhesion is sticking, b makes no sense for this question, and heat has nothing to do with it either, because it distributes it's weight throughout its legs so it doesn't sink (it doesn't weigh much so this works.)
Hope this helps don't forget to hit that heart :)
I'm pretty sure it would be;
-breaking down living and dead plant material
Please refer the attachment for the correct answer
