Calculate the mass of a substance whose density is 0.2 g/cm' and whose volume is 45 cm

Familial hypercholesterolemia, an autosomal dominant disease, is five times more frequent in the afrikaner population of south africa than in the original population of europe from which the ancestors to the afrikaners immigrated. what does this demonstrate?

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?

Where are the strongest jet streams located?