Human interaction affects the physical environment at many different levels, from something as simple as watering the lawn to clear-cutting thousands of acres of forest for farmland. which of the following statements is true regarding human impact on the physical environment? a. eliminating human interaction with the environment will result in a better, safer planet earth. b. geographers and scientists cannot know the consequences of human activity on the environment. c. human interaction with the environment can have both positive and negative consequences. d. even when there are positive results, the environment is harmed by human activities.