Why are there so many natural disasters in the world?

It is caused by a variety of factors, such as solar radiation, sunspots, magnetic storms, and the movement of the earth's crust.

Because nature has to make natural selection.

So there must be biological sacrifices.

Only natural disasters can do that.

So there will be natural disasters.

The global catastrophe is due to the fact that human beings have destroyed the ecology of the earth and caused evil. Every year, the earth is reducing the number of forest and mine resources, and human beings are making cars, clothes, and houses. The entire world of Earth is slowly being destroyed.

Humans shoot themselves in the foot. Mankind is about to come to an end, and civilization is entering a community with a shared future. Bring the consequences of your own destruction.

1.man's wanton destruction of the natural environment, resulting in environmental degradation;

2.In recent years, it has reached an active period of crustal activity;

3.Changes to certain environments indirectly cause changes in climate and other aspects, which in turn lead to disasters;

4.overexploitation of resources;

5.overpopulated, exceeding the earth's feeding load;

6.changes to the Earth's structure caused by noise, nuclear tests, etc.;

7.It has to do with the condition of other planets such as the sun and moon.

Therefore, disasters with natural variation as the main cause are usually called natural disasters, such as **, storms, and tsunamis; Disasters caused by man-made influences are called man-made disasters, such as human-caused fires, traffic accidents, and acid rain. The process of natural disasters can be long and short, slow and urgent. Some natural disasters, when the change of disaster-causing factors exceeds a certain intensity, will manifest as disaster behavior in a few days, hours or even minutes and seconds, such as volcanic eruptions, floods, hurricanes, storm surges, hail, etc., such disasters are called sudden natural disasters.

Although droughts, crop and forest diseases, insects, and weeds generally take a few months to become disasters, the formation and end of disasters are still relatively rapid and obvious, so they are also classified as sudden natural disasters. In addition, there are some natural disasters that gradually appear to become disasters under the condition of long-term development of disaster-causing factors, such as land desertification, soil erosion, environmental degradation, etc., which usually take several years or more to develop, which is called slow-onset natural disasters. Many natural disasters, especially those of high grade and intensity, often lead to a series of other disasters occurring one after another, a phenomenon called disaster chain.

The earliest occurring disaster in the disaster chain is called a primary disaster; Disasters induced by primary disasters are called secondary disasters. After the occurrence of natural disasters, the harmonious conditions for human existence are disrupted, and a series of other disasters can be born, which are generally called derivative disasters. For example, after a major drought, the extreme shortage of surface and shallow fresh water forces people to drink groundwater with high fluoride content in the deep layers, which leads to fluorosis, which is called a derivative disaster.

Of course, the process of disasters is often complex, and sometimes a disaster can be caused by several disasters, or a single disaster cause can cause several different disasters at the same time. In this case, the determination of the type of disaster should be based on the leading cause of the disaster and its main manifestations. If you are satisfied, please adopt.

Peking University Jade Bird Tangcheng Campus: There has always been, but it is much more harmful to human beings, indicating that the ecology is unbalanced.

It's annoying for you to ask so many times, it's been going over and over again, and every day there are such boring anonymous guys asking some messy questions.

The sun has entered a cycle of activity for nearly 10,000 years, and the other planets are all different, so they don't come to you to blow nonsense.

Who said there were more natural disasters this year? . What less natural disasters did a year? It's been a normal year. Grass.

It is impossible to do without disasters, and there will be no year. The main reason is that the damage caused by human beings to the earth is too great, and the future disasters are incalculable.