Pollution

Answer

Pollution is the addition of unwanted or harmful substances into the environment that causes adverse effects on living organisms and the ecosystem. It leads to undesirable changes in the physical, che…

Answer

A pollutant is any substance or agent that contaminates the environment and causes pollution. Pollutants can be chemical, physical, or biological in nature. Examples: sulfur dioxide, plastic waste, no…

Answer

The main types of pollution are: 1. Air pollution, 2. Water pollution, 3. Soil pollution, 4. Noise pollution, 5. Radiation pollution, 6. Plastic pollution.

Answer

Primary air pollutants are substances directly emitted from a source into the atmosphere. Examples: Carbon monoxide (CO) from vehicles, sulfur dioxide (SO₂) from burning coal.

Answer

Secondary air pollutants are not directly emitted but form when primary pollutants react in the atmosphere. Example: Ozone (O₃) forms when nitrogen oxides and volatile organic compounds react in sunli…

Answer

1. Carbon monoxide (CO) – Incomplete combustion of fuels in vehicles. 2. Sulfur dioxide (SO₂) – Burning of coal in power plants. 3. Nitrogen dioxide (NO₂) – Vehicle exhaust and industries. 4. Volatile…

Answer

PM2.5 refers to fine particulate matter with a diameter of 2.5 micrometers or less. It is dangerous because it can penetrate deep into the lungs and even enter the bloodstream, causing respiratory and…

Answer

On plants: SO₂ causes chlorosis (yellowing of leaves) and necrosis (tissue death). On humans: It causes respiratory problems like asthma and bronchitis, and irritates the eyes and throat.