Answer:
Major, because it can affect people's health.
Step-by-step explanation:
This is the most accurate description of the damage that oil can cause. If oil is seeping out of an oil well onto the dirt ground, this can have major consequences for the ecology of the area. Crops that are grown in this land are likely to be affected. Moreover, this oil can eventually get into the water of lakes, rivers, and underground deposits. The impact would not only damage the people's health but also the health of many animals.