Answer:
winnowing
Explanation:
Husk is separated from heavier seeds of grain by winnowing. Difference in the size of particles in a mixture is utilised to separate them by the process of sieving and filtration.
The answer to the question above is this: <span>the endothelium of CNS capillaries forms a blood-brain barrier. The blood-brain barrier is actually a mechanism that the capillaries that carry blood to the central nervous system can do. What this barrier does is that it filters and only allows certain substances (and not all), that's why this cannot directly affect the neurons in the central nervous system.</span>
Sandstone is a clastic sedimentary rock.
