Answer:
Pollution is the degradation of the environment by human activities. This not only concerns chemical compounds, but also sound, light, radiation and the like. These things can be natural, such as carbon dioxide and phosphate, and unnatural, such as plastics and man-made isotopes.
Pollution is referred to when the concentration of the substance or the intensity of the phenomenon is significantly above the normal level. Environmental pollution can pose a danger to humans (including health and prosperity) and nature (including biodiversity).
There are about 150,000 chemicals in use in the world and only about 1,000 are regularly monitored. Due to the lack of knowledge and monitoring, there is not enough information about the toxicity and effects that chemicals can have on an ecosystem and humans.
