Final answer:
When humans move into a new environment, it can have a major impact, such as changes to ecosystems and depletion of species.
Step-by-step explanation:
When humans move into a new environment, it can have a major impact on that environment. Some of these impacts include changes to ecosystems, depletion of certain species, transformation of regional ecosystems, and altering the natural world at local, regional, and global levels.
For example, farming leads to the clearing of prairies, wetlands, and forests, while fishing can deplete certain species and change river and coastal ecosystems. The redirection of water to emergent cities through the construction of dams also transforms regional ecosystems.