Answer:
Tsunami.
Step-by-step explanation:
Tsunami is the term for the large ocean wave that is produced by offshore earthquakes. Earthquakes that is hazardous to humans which are living along the west coast of south America because in the large ocean, big waves are produced due to earthquake in the ocean which causes flood in the coastal regions. Waves produced from ocean earthquake are many meters high that causes great damaged to property as well as lives of people so that's why we can say that it is hazardous to humans.