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Air pollution can cause diseases, allergies, and even death; it can also cause harm to animals and crops and damage the natural environment (for example, climate change, ozone depletion or habitat degradation) or built environment (for example, acid rain). [3] Air pollution can occur naturally or be caused by human activities. [4]
Smog, or smoke fog, is a type of intense air pollution.The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog [1] to refer to smoky fog due to its opacity, and odor. [2]
Whether the fake plant is warmed by the sun or stays cool when it is cold and dark has no bearing on any process within it: it is neither good nor bad for it. Because a real plant has a life of ...
By night, plants engage in respiration, consuming oxygen and releasing carbon dioxide. [74] Plants can draw up more water after sunset, which facilitates new leaf growth. [ 75 ] As plants cannot create energy through photosynthesis after sunset, they use energy stored in the plant, typically as starch granules . [ 76 ]
More pollution: People use more electricity for air conditioning, and cars emit more fumes, adding to pollution. Wildfires: Heat can cause wildfires, which release a lot of smoke and particles ...
The U.S. also saw an uptick in air pollution, climbing from a nationwide average of 8.9 µg/m3 in 2022 to 9.1 in 2023, with the southward-drifting smoke from Canada’s wildfires partly to blame.
Looking down from the Hollywood Hills, with Griffith Observatory on the hill in the foreground, air pollution is visible in downtown Los Angeles on a late afternoon.. Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems.
Light pollution, the term for the brightening of the night sky by unnatural lights, is increasing worldwide. On average, skies are getting 10% brighter each year globally, with the fastest rate of ...