Later some non-science person thought that the gas floated to the top of the atmosphere to form a layer like the glass in a greenhouse. The popular view is that the atmosphere has some sort of layer of carbon dioxide up there that reflects heat back down to Earth rather than letting it escape to space.
The function of the human arm is to be able to reach objects with your hands.he function of the arm in the microscope is to support the tube  and connects it to the base. It is also use to transport the  microscope from place to place. 2 people found this useful. Edit.
The radial nerve is a nerve found in the human arm. This is the nerve responsible for providing the nerve supply to the forearm as well as the posterior compartment of the arm, also called the extensor compartment.This compartment holds the muscles that are supplied by the radial nerve.his is the muscle that makes it possible to straighten the arm. The radial nerve begins at the structure known as the brachial plexus. This is a network of nerve fibers traveling from the spine and into the neck, armpit region, and then into the arm.