One: The direct disaster caused by the earthquake has little to do with the magnitude of the earthquake. Magnitude below 3 is a weak earthquake, which is usually not felt. When the magnitude is equal to or greater than 3 and less than or equal to 4.5, it is called a felt earthquake, which is usually perceptible to people. Magnitude greater than or equal to 8 is also called a giant earthquake, which can produce devastating disasters, such as the previous Wenchuan earthquake and Tangshan earthquake. An earthquake occurred in Xiuyan, Anshan, Liaoning. The epicenter was located in Gushan Town, Haicheng City, Anshan, with a focal depth of 10 km. The epicenter felt obvious. According to the analysis of experts from the Seismological Bureau of Liaoning Province, this earthquake is mainly residual, and no major earthquake will happen again in the short term. Earthquake will cause all kinds of direct disasters, such as destroying buildings and structures, destroying the ground, destroying natural objects, such as mountains, which will lead to the collapse of houses, broken bridges, ground cracks, collapses, landslides, volcanic eruptions and so on. And it will also trigger a tsunami and cause damage to coastal areas, so the impact of the earthquake is very great. For example, the Wenchuan earthquake and Tangshan earthquake in China have caused devastating damage to the local area, and it takes a lot of time and energy to repair the disaster area, so it will also destroy the local economic chain.

Second, the indirect damage caused by the earthquake has a great impact on human beings and the natural environment. In addition to direct disasters such as house collapse, broken bridge, ground fissure, collapse, landslide and volcanic eruption. It will also lead to some secondary disasters, such as fires caused by uncontrolled fire sources after the earthquake, plagues caused by serious damage to the living environment after the earthquake, and toxic gas leakage caused by damage to buildings or devices. Floods caused by dam breaks or landslides blocking rivers are secondary disasters caused by earthquakes. In addition, all kinds of problems caused by earthquakes are fatal to human beings. How many people died in the earthquake, we can see how big the impact of the earthquake is. The 9.5-magnitude earthquake in Chile, the largest in the world, caused six volcanoes to erupt again, and three new volcanoes appeared, causing earthquakes and tsunamis and threatening coastal cities. The economic losses caused by the earthquake are even more difficult to know accurately. In other words, in the whole geological era, the probability of an earthquake above 10 is the degree of species extinction, which is almost devastating.

Compared with nature, human beings are extremely small. Disasters such as earthquakes are almost devastating to human beings. Protecting the ecological environment is everyone's responsibility.