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Nowadays, there are fewer and fewer egrets, mainly because the trajectory of human activities is getting bigger and bigger, which leads to the decrease of their habitat area. Moreover, many egrets are afraid of people and won't say who lives in the same environment, so wherever human footprints go, they will avoid such habitats, and the decrease of their area also leads to the decrease of their number. Now, in many places, even in ecological reserves, there are some plastic garbage and environmental pollution to a great extent, which is very harmful to their health. At present. Water pollution in some rivers and streams is also very serious, which makes it difficult for many fish to survive. So it is difficult for egrets to feed, so now there are fewer and fewer egrets.

First of all, the habitat area of egrets is gradually decreasing.

As we all know, since the reform and opening up, the trajectory of our human existence has become larger and larger, and the scope of our human activities has also become larger and larger. In some places with good natural environment, tourist areas have also been established. Therefore, in some tourist seasons, it often causes great damage to the ecological environment in this area. Wherever the law of our human activities goes, then for the Millennium, an area of their memory will be transferred, so where is it transferred? If we want some scenes, it will be more difficult for them to survive in the Millennium, so their habitat area is decreasing, so their number is also decreasing sharply.

Secondly, environmental pollution is harmful to their health.

Nowadays, a lot of environmental pollution will do some harm to their bodies, including air pollution, including some plastic garbage, which will make it difficult for them to find food. Moreover, some plastic garbage is likely to entangle their bodies, or cause some bondage and harm to their bodies, which will have a great impact on their lives. Therefore, environmental pollution caused by human activities is one of the most important reasons for their decrease.

Three. Water pollution causes their food to produce toxins.

Water pollution is also a very serious problem. If our usual drinking water is actually made of some purified water treated by waterworks, and most of their water sources in some rivers and some streams are polluted by some pesticides and fertilizers, then the survival number of many fish has also decreased sharply, so it is relatively difficult for egrets to find food, so with their lack of food, their food will be scarce.