To accurately identify and explain the two most significant hazards affecting Point A and their impact on building stability, I would need specific details about Point A and the hazards present there. Generally speaking, seismic activity (earthquakes) and flooding are commonly serious hazards for building stability.
Seismic activity is particularly dangerous because it can cause sudden and intense shaking, leading to structural failures in buildings that are not designed to withstand such forces. Flooding undermines building foundations and can erode soil, compromising stability and increasing the risk of collapse. Together, these hazards can critically threaten the integrity and safety of structures at Point A.