The way Punnett squares can be solved is by cross-matching
Erosion can be caused by water wearing down a surface
Wind constantly or midly knocking or hitting a surface making it erode
Any natural form of life
The correct option is D. Because uranium is a radioactive element, such run off is very dangerous to the people who are living in the environment where the spill occur. The run off must be isolated as soon as possible, by collecting it in a retention pond.