I think it might be called the "tail." I might be getting this mixed up with a comet, but I THINK(emphasis on think ^^') they're similar in that aspect?? Sorry if this didn't help.
Answer:
Infrastructures affected include those who are most vulnerable to the weather conditions such as Power lines and road and bridge. The harsh conditions damages these infrastructures. A damage in any of them usually cause a ripple effect and also affects others indirectly too.
This affects the economy by a steady decline being noticed because the economy is usually run on these infrastructures.
It was caused by widespread disconnect with the French monarchy and the poor economic policies of King Louis XXI
Answer: EXCESS NUTRIENTS FROM FERTILIZERS
Explanation: Fertilizer is an organic or synthetic chemical materials which contains certain nutrients or chemical compounds required by plants for proper growth and development.
Euthrophication is the process of increase in the plant population in water bodies such as Algae and other higher plant species due to the release of nutrients into water bodies. This nutrients can be washed through the flooding of farm lands,erosion etc. Example of fertilizers include livestock manures,Ammonium nitrogen fertilizer,Nitrate nitrogen fertilizer,Amide nitrogen fertilizer,Agricultural waste etc.
C. Forests of Southern China.