_______ are chemicals that are used to kill plants.
Digestion
Herbicides
Bacteria
Sanitation
Genetic engineering of food happens by changing the ____ of the plants or animals.
DNA
soil
stores
fertilizer
There is great potential to improve the _______ value of our food.
nutritional
market
monetary
sugar
Critics of GMO products _____ we do not understand their effects.
improve
fear
implicate
support
People have altered the genetic _____ of plants for thousands of years.
friends
toxins
traits
herbicides
