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.
In human anatomy, the biceps brachii (/ËbaÉªsÉps ËbreÉªki.aÉª/), commonly known as the biceps, is a two-headed muscle that lies on the upper arm between the shoulder and the elbow. Both heads arise on the scapula and join to form a single muscle belly which is attached to the upper forearm. While the biceps crosses both the shoulder and elbow joints, its main function is at the latter where it flexes the forearm at the elbow and supinates the forearm.