What gas in the atmosphere is the source of ozone?

Answer 1

The short Answer is di-atomic Oxygen or O2.Ground-level OzoneWhat is ozone?O3 is a colorless, odorless gas at ambient concentrations and is a major component of smog. What are the sources of ozone?Ground-level ozone is not emitted directly into the atmosphere. It results from photochemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOCs) in the presence of sunlight. High levels typically occur from May to September, between noon and early evening. What are the effects of ozone?O3 irritates the respiratory tract and eyes. Exposure to high levels of O3 results in chest tightness, coughing and wheezing. People with respiratory and heart problems are at a higher risk. Ozone has been linked to increased hospital admissions and premature death. Ozone causes agricultural crop loss each year and noticeable leaf damage in many crops, garden plants and trees.

The "good" ozone layer in the stratosphere protects life on Earth from the Sun's harmful ultraviolet (UV) rays.

"Bad" ozone at ground-level is harmful to breathe and damages crops, trees, and other vegetation.