A genetically modified plant may produce specific
proteins or other substances that have never before
been a part of the human food supply. These
substances have potentially negative side effects; for
instance, they (17)---- as toxins or allergens. Accordingly,
an extensive testing and approval process is mandated
for foods of this kind, including individual ingredients
and additives (18)---- whole foods. Approval is granted
(19)---- the food is shown to be safe in accordance with
scientific standards. This is accomplished by comparing
the genetically modified product with its traditional
(20)----. The long-term effects of the use of genetically
modified plants (21)---- people and the environment have
not yet been adequately determined