Definition:

    Pollution is the introduction of substances, materials, or forms of energy  into the environment that have negative effects on living organisms, ecosystem balance, or human health.

Causes of pollution:

Volcanic eruptions: The release of toxic gases and particles into the atmosphere.

Dust storms: Fine particles lifted into the atmosphere.

Natural fires: Smoke and ash produced can affect the air and soil.

Industrial activities: Emissions of harmful gases, toxic waste, thermal pollution.

Agriculture: Excessive use of pesticides and fertilizers, which contaminate soil and groundwater.