Pollution is the introduction of contaminants into an environment that causes instability, disorder, damage or uneasiness to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy, such as noise, heat, light, or smoke. Pollutants, the elements of pollution, can be foreign substances or energies, or naturally occurring; when naturally occurring, they are considered contaminants when they exceed natural levels.In the late industrial age, the term over pollution was common, representing a view that was both dangerous of industrial pollution, but as well accepted a certain degree of pollution as nominal industrial practice. Such pollutions include:

Air pollution

Water Pollution

Land pollution

Air pollution
Air pollution occurs when contaminants, such as CO2 and carbon monoxide are released into the air. The air then becomes toxic and not safe for us to breathe. In some serious cases, plants are not able to withstand the amount of toxic in the air and fail to photosynthesise.

Acid rain:
When an air pollutant, such as sulphuric acid combines with the water droplets that make up clouds, the water droplets become acidic. When those droplets fall to the ground as rain or snow, the acidity of the water can have damaging effects on the environment. When acid rain falls over an area, it can kill trees and harm lots of wildlife. Acid rain abolishes the leaves of plants. When acid rain gains access into soils, it changes the chemistry of the soil making it unhealthy for many living things that depend on on soil as a habitat or for nutrition. Acid rain also changes the chemistry of the lakes and streams that the rainwater flows into, harming fish and other aquatic life.

Global warming:
Our planet is presently warming much more rapidly than expected because of additional greenhouse gases that are released into the atmosphere. When fuels are burned, some of the pollutants released, such as carbon dioxide (c02) and carbon monoxide. Through the process of photosynthesis, plants change carbon dioxide into oxygen and use the carbon to grow larger. However, the amount of carbon dioxide released by burning fuels is far greater than plants can convert. Deforestation worsens the problem.

Water pollution:

Water pollution happens when again, the introduction of contaminants into the water. Negative effects include unhealthy consumption of this matter by animals, contamination of water, unclean water supply and more.

Oil spills:
When tankers carrying oil explode, the oil would leak out into the ocean, causing pollution. In some cases, the oil would flame, emitting smoke into the air. Oil spills can also happen when an oil drill suddenly explodes, causing extremely large amounts of oil into the ocean. When this happens, the oil travels to the surface of the water. Then, aquatic animals may be coated in oil, especially seabirds.

Littering:
When you throw waste into the ocean, this waste may be consumed by animals, causing them to die, if the items are not biodegradable.