"Across the world, ministries of environment and natural resources and/or environmental protection agencies have different mandates and missions, but many of them focus on the protection of the environment with the goal of protecting public health. Environmental health practitioners monitor food safety from farm to table: are responsible for vector and vermin monitoring and control; and monitor microbial and chemical pollution of the land, water, and air. Natural resource mangers monitor ecosystems and landscapes and the creatures that occupy them. They often see trends in the natural world before they are seen in the urban world. For example, unusual wildlife morbidity and mortality can indicate presence of pathogenic or toxic agents that could potentially be detrimental to human health. The environment sector is a valuable contributor in the promotion of population health and well-being, particularly in 'health security' efforts to prevent and prepare for endemic, epidemic, and pandemic threats."