The mathematical sciences are a group of areas of study that includes, in addition to mathematics, those academic disciplines that are primarily mathematical in nature but may not be universally considered subfields of mathematics proper.
Poor air quality is a major health risk, causing lung diseases, cardiovascular diseases, and cancer. Air pollution also impacts the environment, affecting the quality of fresh water, soil, and ecosystems.
EN 
CS
DE
ES
FR
HU
IT
PL
PT
РУ
SK
TR
УК
AR
中文
