the fuzz on the nuts means it is not fully grown
Age more likely. The "fruit" inside the pecan shell is rotting, which thus makes the "nut" appear black.
it reminds me of like a shell or a covering examples: a pecan , also an m&m like the color and then the chocolate is the insides of the cell .
The outer covering of a prawn in a shell.
Walnut is an edible nut with a smooth thin shell.
Pecan trees have many adaptions so I'll just tell you a few: Shedding, thin bark, pecan scab or leaf blotch, and lightweight shell.
The shell.
shell
A hard shell
It is a shell, as in a cockle shell or oyster shell.
A shell. Before that the chicken was covering it.
The shell or exsoskeleton
Shell