The document discusses biological and environmental factors that may require children to need additional support. It defines biological factors as those resulting from genes passed from parents, such as inherited conditions. Environmental factors are defined as the settings and surroundings a child is raised in, including living conditions, housing, income and availability of play space. The document provides examples of both biological factors, such as cystic fibrosis and muscular dystrophy, and environmental factors, like pollution, poverty, and lifestyle, that can impact children's development.