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.
exists and is an alternate of . Arterial blood is blood that has picked up oxygen (oxygenated) in the lungs and is being circulated through the body. Venous blood is blood that has been circulated and is now de-oxygenated (low Oxygen content) and is being returned to the lungs to start the process over. + 15 others found this useful.