Submit. Â· just now. Report Abuse. when a rock is subjected to severe heat, then dramatic cooling onion weathering takes place. This is a form of physical weathering. The sudden change of temperature weakens the outer layer of rock and it will crumble away, this happens to rocks in the desert.
Definition. Common arterial trunk (CAT) is characterized by a single arterial trunk that arises from the base of the heart and gives origin to the systemic, coronary and pulmonary circulation. A large ventricular septal defect (VSD) is almost always present.
A trunk is a line or link designed to handle many signal s simultaneously, and that connects major switching centers or node s in a communications system.The transmitted data can be voice (as in the conventional telephone system) data, computer programs, images, video or control signals. trunk can also be a broadband wireless link. The use and management of trunks in a communications system is known as trunking. It minimizes the number of physical signal paths, and thus the total amount of cable hardware, required to serve a given number of subscribers in a network.