How Saguaros Grow. Saguaros are a very slow growing cactus. In Saguaro National Park, studies indicate that a saguaro grows between 1 and 1.5 inches in the first eight years of its life. These tiny, young saguaros are very hard to find as they grow under the protection of a nurse tree, most often a palo verde, ironwood or mesquite tree.
A housing cooperative, or co-op, is a legal entity, usually a corporation, which owns real estate, consisting of one or more residential buildings; it is one type of housing tenure.
Related Terms. A type of multitasking in which the process currently controlling the CPU must offer control to other processes. It is called cooperative because all programs must cooperate for it to work. If one program does not cooperate, it can hog the CPU.