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Ozone is a toxic substance, [42] [43] ... it is not as dangerous to plants and to the health of ... Temperature and humidity play a large role in how much ozone is ...
Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere, [citation needed] and a much larger springtime decrease in stratospheric ozone (the ozone layer) around Earth's polar regions. [1] The latter phenomenon is referred to as the ...
Ground-level ozone (O 3), also known as surface-level ozone and tropospheric ozone, is a trace gas in the troposphere (the lowest level of the Earth's atmosphere), with an average concentration of 20–30 parts per billion by volume (ppbv), with close to 100 ppbv in polluted areas.
The Environmental Protection Agency is delaying plans to tighten air quality standards for ground-level ozone — better known as smog — despite a recommendation by a scientific advisory panel ...
The ozone hole was much more seen as a "hot issue" and imminent risk compared to global climate change, [13] as lay people feared a depletion of the ozone layer (ozone shield) risked increasing severe consequences such as skin cancer, cataracts, [23] damage to plants, and reduction of plankton populations in the ocean's photic zone. This was ...
A 2020 study showed that ozone pollution in California may reduce yields of certain perennial crops such as table grapes by as much as 22% per year, translating into economic damages of more than $1 billion per year. [212]
Fresno, Madera, Kern and Kings counties are all among the top 10 for three categories of air pollution — daily or short-term particle pollution, annual particle pollution and ozone pollution.
In 2024, the Los Angeles-Long Beach-Riverside area ranked the 1st most ozone-polluted city, the 6th most polluted city by annual particle pollution, and the 11th most polluted city by 24-hour particle pollution. [3] Both ozone and particle pollution are dangerous to human health.