Air pollution [eə pəˈluːʃn]

Air pollution is the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. Air pollution may cause diseases, allergies and even death to humans; it may also cause harm to other living organisms such as animals and food crops, and may damage the natural or built environment.

92% of the world population lives in areas with polluted air which causes 11.6% of global recorded deaths, points out World Health Organization.

Ozone layer [ˈəʊzəʊn ˈleɪə]

The ozone layer or ozone shield is a region of Earth's stratosphere.

The ozone layer absorbs 97 to 99 percent of the Sun's medium-frequency ultraviolet light, which otherwise would potentially damage exposed life forms near the surface.

Acid rain [ˈæsɪd reɪn]��

Acid rain describes any form of precipitation that contains high levels of nitric and sulfuric acids. It can also occur in the form of snow, fog, and tiny bits of dry material that settle to Earth.

Acid rain [ˈæsɪd reɪn]��

It makes trees vulnerable to disease, extreme weather, and insects by destroying their leaves, damaging the bark and arresting their growth.

Land pollution [lænd pəˈluːʃn]

Land pollution means degradation or destruction of the Earth’s surface and soil, directly or indirectly, as a result of human activities.

Deforestation [dɪˈfɒrɪsˈteɪʃn]

The remaining word's forests which cover 30% of the land are threatened by deforestation. National Geographic reports that forests are cleared mainly for agriculture and logged for timber.

Deforestation [dɪˈfɒrɪsˈteɪʃn]

Deforestation leads to loss not just of biomass and plant species, but also of habitats of animals. Deforestation is also said to be a driver of climate change as trees that normally absorb carbon dioxide are no longer there.

Water pollution [ˈwɔːtə pəˈluːʃn]

Water pollution is the contamination of water bodies, usually as a result of human activities. Water bodies include for example lakes, rivers, oceans, aquifers and groundwater.

Global warming [ˈgləʊbəl ˈwɔːmɪŋ] ��

Global warming is the unusually rapid increase in Earth’s average surface temperature over the past century primarily due to the greenhouse gases released by people burning fossil fuels.

Global warming [ˈgləʊbəl ˈwɔːmɪŋ] �

The impact of global warming is far greater than just increasing temperatures. Warming modifies rainfall patterns, amplifies coastal erosion, melts ice caps and glaciers, and alters the ranges of some infectious diseases.

Endangered species [ɪnˈdeɪnʤəd ˈspiːʃiːz] �

An endangered species is any animal or plant species that is in danger of extinction throughout all or a significant portion of its range and/or whose habitat has been drastically reduced such that the species is deemed in danger of extinction. .

HUMANS

Cut down trees

Build houses and roads

Drain

the marshes

Hunt for fur, meat, fun

POLLUTION

Acid rain

Oil spills

Water pollution

Land pollution

Air pollution

Rubbish

Endangered species [ɪnˈdeɪnʤəd ˈspiːʃiːz] �

Overpopulation [əʊvəpɒpjʊˈleɪʃn]��

Overpopulation is an undesirable condition where the number of the existing human population exceeds the actual carrying capacity of Earth. Overpopulation is caused by a number of factors. Reduced mortality rate, better medical facilities, depletion of precious resources are few of the causes which result in overpopulation.

Overpopulation [əʊvəpɒpjʊˈleɪʃn]��

The effects of overpopulation are quite severe. The first of these is the depletion of resources. The Earth can only produce a limited amount of water and food, which is falling short of the current needs.

Overpopulation [əʊvəpɒpjʊˈleɪʃn]��

With the overuse of coal, oil, and natural gas, it has started producing some serious effects on our environment. Besides, the exponential rise in the number of vehicles and industries has badly affected the quality of air.