The Classical Era set the scene. It brought us the major civilizations, religions, and trade routes. But, what happens when all of the major world powers collapse? This is the Post-Classical era. The major world powers come from places you might not expect. There are some powers that are similar to the ones before and the ones after (Byzantine, China). But, the major players in the Post-Classical era come from totally backwards places. One sprouts out of a cave in the Arabian desert. The other comes from the base of a mountain on the steppes in Central Asia. I call this era, Muslims & Mongols. That's not everything, but it just about sums up the basics. (Of course, Trade, Migrations, Religion, and Labor are important...) The Post Classical Era is the FIRST era that represents 20% of the test. From here on out, these eras are worth more than the first two.
Answer: Optic nerves.
Explanation:
Nerves are responsible for carrying electrical signals throughout the body and towards the brain. They are predominantly used for communication between body parts.
The retina is responsible for triggering these nerve impulses.
The pupil is a hole in the iris. Its main function is to allow light into the eye.
The iris controls the size of the pupil in order to maintain the correct amount of light entering the eye.
The correct answer is optic nerve.
Two Nuclear Bombs, one on Hiroshima, the other on Nagasaki
He explained culture and ideology in a way anyone could understand it
