Lecture 5 humans impact on natural systems. Human geographers are now doing research to expose human impact on the environment. We make decisions about the environment (e. g. transportation, etc. ) The relationship between humans and environment is a 2-way relationship. We impact the environment and the environment also influences our way of life (e. g. what we can do, where we can live, and etc. ) Humans can be blind to their impact. Humans have become the active and dominant agents of environmental change. Every human activity has a direct or indirect impact. May be insignificant, but in a long period time it will become significant. Humans are agents of change, particularly because of their increasing population. Environment can refer to water; oil spillage no way the water can be cleaned up to its original state. Humans do farming or plantation that alters the environment. Need chemicals to grow food: the chemicals will lead to deterioration of the landscape.