POLUTION

Crowd.

The world's population Now is much more than ever it wasو and this because of the evolution of development and advancement of medication and medication treatment that is provided now in the most developed countries in the world, which has enhanced the general health care for the most citizens in the developed countries, and reduced the number of physical deaths by each year, and this health car advancement has been accompanied with high demand on commodities and medication resources, in addition to a wide usage of agricultural and manufacturing resources which forced both to enlarge it's capabilities and by return the expanding in climatically harmful exhausts. 

Manufacturing Exhaustion.

although production facilities produce benefits for the human kind, but it produces negatively also the exhaustion and Non-recyclable materials that harms the environment and causes deaths of some living species on Earth, like whales and ocean dolphins, it also takes time to decay and some materials could have a life span for a million of years to decay like plastic materials and Petro-chemicals.
Developed countries are most likely to produce these harmful materials because of the advancement in manufacturing and agricultural industries, thus the exhaustion and Methane gas emissions increase and the efforts has been going since long time to decrease those emissions on large scale.

Ozone Layer.

One of the most dangerous pollution types is the atmospheric pollution where the Carbon monoxide, Dioxide and Sulfur dioxide. The biggest resource of pollution is the car exhaust and power plants where Carbon Dioxide is produced by hundreds of metric tons of gases and emissions that could affect the growth of the living plants and dry the soil by affecting on the atmospheric level which increases the harmful cosmic radiation that breaches our atmosphere at thin areas that have a lake of Ozone gas layer.
Other resources of pollution is the Insecticides and Herbicides and sewer discharge facilities and garbage disposal areas. all these are combinations of what it means to our planet of staying alive for much as we can on it.

Noisy street maintenance operations.

Other type of pollution is the noise pollution which has encountered large cities and filled our ears daily when we go to streets and this one is less dangerous than the physical pollution of our atmosphere but it can cause health problems to people that encounter it every day or on regular basis.