1. Why is air pollution a health threat? How is it measured?
Air pollution is categorized as both indoor air pollution and outdoor air pollution which causes exposure of harmful particles to the earth’s atmosphere. These may be particulate or biological molecules that may lead to allergies, diseases or death to humans and other living organisms such as animals and plants. According to the 2014 world health report, air pollution caused death of over 7 million people worldwide in 2012. People suffering from heart diseases, allergies and respiratory diseases tend to be more susceptible to air pollution hazards. There are many pollutants such as volatile organic compounds, carbon monoxide and dioxide, nitrogen oxide, sulfur oxide, ammonia etc. Chlorofluorocarbon (CFC) is the pollutant that destroys the useful atmospheric layer called Ozone…………….
2. Why is global warming so controversial? What is causing it?
Scientist consensus on changes in climate has been recent warming shows a stable long-term trend, which is largely caused by human activities and that serious damage, may occur in future if no steps are taken to curb the trend. Some have the opinion that the Earth is rapidly heating due to the man-made pollution penetrating the ozone layer, others that the Earth is just having the good and bad cycles in terms of human inhabitation. Critics on consensus views on global warming have disagreed, with scientific consensus on issues relating to environmental risks such passive smoke, ozone depletion. Chris moony, author of “The Republican war in science” has argued that unrelated controversial results from an organized attempt to replace scientific analysis with political ideology by the overlapping group of skeptical scientists…………………………
3. What is Acid deposition? How is it damaging?
Acid deposition is the accumulation of acidic compounds on the Earth’s surface, in lakes or on vegetation. It is a combination of chemical and atmospheric phenomenon where gases containing sulfur dioxide and nitrogen…………………