【正确答案】正确答案： Human health has always been dependent on our relationship with our environment. Humans, like other animals, are constantly transformed by natural forces in the environment that act on them, and they in turn continuously transform their environment. Humans are part of a dynamic system in which they continuously interchange matter and energy with the world about them. It must never be ignored that in the final analysis, concern for the public's health is the paramount reason for environmental action. On the other hand, public health workers themselves must be careful to avoid instituting or perpetuating actions or programs that are too narrow, environmentally ill-advised, or outdated. Our environment in reality is a multifaceted system that encompasses the physical and biotic realms and the cultural setting fashioned by our unusual cerebral capabilities. The interrelations between the total person and the total environment are dynamic. Each makes aggressions on the other. Each in turn responds to these aggressions. To support our biologic, cultural, and uniquely technologic needs, we boldly and continuously alter the naturally occurring environment and create ever new environments. Often this is done with inconsistency and without thought of the total or ultimate consequences.