Even a small amount of lead can kill cattle. Cattle will readily drink crankcase oil, lick grease from machinery and chew on lead plumbing and batteries. Other frequent causes of poisoning include flaking high lead paint, ash from fires in which lead materials were burnt, lead shot from shooting.
life cycle. 1  The series of changes in the growth and development of an organism from its beginning as an independent life form to its mature state in which offspring are produced. 2  The sequence of events between the start of one generation and the start of the next.
This life cycle is characterized by a number of key stages: 1  Initial concept definition; 2  Development of the detailed design requirements, specifications and documentation; 3  Construction, manufacture or purchase;  Warranty period and early stages of usage or occupation;