(d)Brachysclereids are also called what?

They are also called "Stone Cells"

Explanation:

a more or less isodiametric sclereid typically occurring in pith, cortex, and bark of many stems and in certain fruits (such as pear and quince)

probably since the potency of the cocaine, not a lot, but i've never done any research on cocaine so i wouldn't know, but i would also guess it would determine on the gap between sniffs or if you did it all at once, so i really don't know.