CAUSES OF AIR POLLUTIONS

WHAT CAUSES AIR POLLUTION?

• Air pollution is when waste source such as automobile exhaust contaminate the atmosphere
• These pollutants can be in the forms of liquid, gas, and soild
• Air pollutions can be resulted by both human activities and natural causes.

TYPES OF AIR POLLUTANTS

• There are two main types of air pollutants : primary and secondary
• Primary pollutants are directly into the atmosphere
• Secondary pollutants are formed in the atmosphere by chemical reaction with primary pollutants
• Ex of primary : household product, power plants, and motor vehicles
• Ex of secondary : divided into fine (enter air by burning fuel and coal) and course ( cement plants, incineration, and wood burning ) part.

EFFECTS OF AIR POLLUTION

• Causes health problem in the respiratory system
• Causes smog( mixture of smoke and fog produce by industrial burning )
• Causes temperature inversion ( warm air traps cool air near the earth's surface )
• Causes acid precipitation

REGULATING AIR POLLUTIONS

• California's zero emission vehicle program( electric cars, also adpoted by NY and a few other states)
• The clean air act of 1970 , strengthen in 1990 gives EPA authority to regulate vehicle and industrial pollutants