What is the simple definition of environmental pollution?
Environmental pollution is defined as “the contamination of the physical and biological components of the earth/atmosphere system to such an extent that normal environmental processes are adversely affected.
What causes Beijing’s pollution?
The causes of Beijing’s widespread air pollution can be attributed to a number of factors: an enormous economic boom, a surge in the number of motorized vehicles, population growth, output from manufacturing, and natural reasons which include the city’s surrounding topography and seasonal weather.
What is environmental pollution class 9?
What is Environmental Pollution? When there is an undesirable change in the surrounding that has harmful effects on plants and animals, it leads to environmental pollution. A pollutant is a substance that causes pollution. We can have pollutants in liquid, solid or gaseous form.
How bad is Beijing’s air pollution?
The city of Beijing was ranked at 201. Throughout 2019, Beijing had just two months when the air quality was classified as “Moderate” with readings between 12.1 and 35.4 µg/m³. The remaining ten months showed readings of 35.5 to 55.4 µg/m³ which categorised it as “Unhealthy for Sensitive Groups”, according to The WHO.
Is Beijing’s air quality improving?
We confirmed that Beijing’s air quality has improved significantly in recent years, but air pollution levels are still well above the WHO guidelines, leading to poor health and wellbeing for over 20 million people.
Why is PM10 harmful?
PM10 particles are so small that they effectively act as a gas. Exposure to high concentrations of PM10 can result in a number of health impacts ranging from coughing and wheezing to asthma attacks and bronchitis to high blood pressure, heart attack, strokes and premature death.
How pollution in China affects the world?
The People’s Republic of China is the world’s leading annual emitter of greenhouse gases and mercury. An estimated 1.24 million people died from exposure to air pollution in the PRC in 2017, according to a recent study in the medical journal The Lancet.