The optic nerve carries impulses to the thalamus and ultimately to the visual cortex of occipital lobes.
The optic nerve is a paired nerve, and part of the central nervous system that transfer visual messages from the retina to the vision areas of the brain through electrical impulses. The optic nerve is situated behind the eye and it is made up of retinal ganglion cell axons, glial cells and over one million nerve fibers.
Diploid chromosomes.
Diploid is basically a cell which contains two sets of chromosomes from each parent. In humans, the diploid chromosomes number is always the same and is always even.
Chromosomes are always in pair, and which is why every human being have an even number of chromosomes. Every child gets its chromosomes from both the parent, half from mother and half from father. All the cells in humans except the sex cells are diploid. Sex cells on the other hand are called haploid.
A) unproductive wastelands I believe is the answer you are looking for.