Human/Environmental Interactions are how the environment effects us and how humans effect it in return. Cutting down a forest would be a Human/Environmental Interaction because humans are modifying the natural environment for their own needs. For example, if humans cut down a forest to make a shopping mall, the removal of the trees changes the environment to make that mall. They would have to pave roads and build the structure of the building. None of that was there before so humans are changing the environment. The picture above is what used to be a forest but now it looks bare and abandoned. The animals that lived there had to leave and many died. Was that shopping mall really necessary? Are we going to far? In my opinion, yes. But not every Human/Environmental Interaction is bad. For example, dams do many different things including "48 % are for irrigation, 17% for hydropower (production of electricity), 13% for water supply , 10% for flood control, 5% for recreation and less than 1% for navigation and fish farming". Dams are made for a variety of reasons, humans and environment alike.
The Hoover Dam
The Hoover Dam is in between Arizona and Nevada and was built in the early 30's during the depression.