This is the 3590th most frequent Russian word.
снижения
Reduction; decrease.
In this sentence, 'снижения' is used as a noun describing the action or result of reducing prices.
Снижение цен на продукты помогает покупателям.
The reduction of prices on products helps customers.
Here, 'снижения' is used as a noun referring to the process of decreasing temperature.
Для успешного снижения температуры важно проветривать помещение.
For successful lowering of the temperature, it is important to ventilate the room.
This usage of 'снижения' functions as a noun in a genitive plural form, indicating multiple instances or aspects of reduction in pollution levels.