The contamination of land, air, or water is called pollution, and it can be natural or human-made. The substances that are responsible for causing pollution are called pollutants.
The contamination of the air is called pollution. The smoke from vehicles, dust storms are examples of air pollution. Air pollution leads to many diseases like lung cancers and asthma.
Any undesirable change in water is called water pollution. It occurs when oils or chemicals get discharged into water bodies. Water pollution leads to many diseases like dysentery and jaundice.
Undesirable changes in the land are called land pollution. Dumping garbage or poisonous wastes in the land causes this pollution.
Loudspeakers, vehicles, etc., cause noise pollution.
The natural disasters that affect life are called calamities.
The immediate shaking of the ground due to vibration beneath the Earth is called an earthquake.
When an Earthquake occurs under the sea or ocean, a tsunami takes place. The waves of the Tsunami are as high as 20 to 30 meters and are life-threatening.
The lack of water due to lowered rainfall is known as drought. The shortage of water affects life.