Final answer:
Humans have altered the environment in TFC through excessive fishing, converting prairies to farm fields, and emitting greenhouse gases.
Step-by-step explanation:
Humans have altered the environment in several ways in TFC. One way is through fishing cod at a rate that is greater than natural replacement. This causes a depletion of certain species, which can disrupt the ecosystem of rivers and coastal waters. Another way is by converting a prairie to a farm field, which involves clearing natural habitats and impacting local ecosystems. Lastly, the emission of greenhouse gases increasing the average temperatures of an area can lead to changes in climate patterns and the overall environment.