O3
Ozone symbol. It is a very irritating gas for the respiratory tract, which is part of smog. It also has bactericidal properties and captures ultraviolet radiation.
OD
Sigla de oxígeno disuelto.
OMS
Acronym for World Health Organization.
Organic
Belonging to or derived from living organisms.
Genetically modified organisms (GMOs)
Organisms whose genetic material (DNA) has not been modified by natural multiplication or recombination, but by the introduction of a modified gene or a gene from another variety or species.
Oxidation
Chemical reaction by which a substance gives off electrons.
Ozone
Triatomic allotrope of oxygen present in the upper atmosphere intercepts ultraviolet radiation.
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