Answer:
<em>The answer would be </em><em>B. Discontinuous Variation Only</em><em>.</em>
Explanation:
Gender is discontinuous as there's only male and female. Sickle Cell/Normal is also discontinuous as you can only be one or the other. Same with blood group as there's only four types and no in-betweens.
<span>Arachnoid granulations are knoblike projections that protrude superiorly through the (dura) mater to absorb cerebrospinal fluid into venous blood.
Arachnoid granulation or arachnoid villous protrude from subarachnoid space to dura mater where the vein located.</span>
Answer:
they're both cause by convection
