Some trees on the road died. How did they all die?

There are many reasons, such as too serious root damage when planting trees, too deep planting of special tree species, insufficient planting holes, insufficient soil replacement and too much garbage in planting holes. Maintenance is not in place. Extremely cold ... wait. The most important factor is human destruction. Many street shops repair cars, open restaurants and so on, and pour them into tree pots ~ ~ ~ Basically, fewer people get sick and die, and more people die from man-made disasters ~ ~ ~

Satisfied, please adopt.