Genetically Modified Organism. This is a plant or animal that has been genetically
engineered. Many industries support the development and use of GMOs while many
consumers and organizations question their safety and have called for adequate
and independent testing of GMO products. It is legal for farmers in the U.S.
and some other countries like Argentina to produce and sell certain GMOs for
human and animal consumption, but in other places like Europe and Japan, they
are banned until further testing can be done to prove they are safe.

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Detailed info on GMO