As the years pass, their relationship evolves and Cassidy not only gives Zack her friendship but her love, as well. Cassidy spent her childhood being verbally and physically abused. The best part of her life When Zachary Stafford first set eyes on Cassidy Pope she was being beaten by her father.
Lead enters the body primarily through inhalation and ingestion. Today, adults are mainly exposed to lead by breathing in lead-containing dust and fumes at work, or from hobbies that involve lead. Lead passes through the lungs into the blood where it can harm many of the body's organ systems.
Lead is a good shielding material as it has plenty of electrons, two of the key processes by which gamma photons lose energy involve electrons. These are photoelectron production and Compton scattering. The lead also has the advantage that the high atomic number is likely to increase the chance of pair production.