Is a structure that contains spores and is located on the underside of fern leaves. basidium bacillus cilium sorus

Aboy with an extra x chromosome probably has which of the following syndromes?

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.

Compare the shapes of the bones of the human skull with the shapes of the bones of the human leg. how do the shapes differ? why are the shapes important?