The answer would be 3), what is the effect of crop selection for pest-resistance on the sale of green salad in grocery stores.
(This is a direct/tangible variable that can be measured)
<u>Three types of genetically engineered plants are:
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I) Corn- Corn contains phosphorous mineral which plays an essential role in the growth and maintenance of body tissues
II) Soy-Its function is to promote essential amino acids for human nutrition.
III) Alfalfa- This is a source of Vitamin A, C, E and K4 along with minerals such as calcium, potassium, and iron protein. It encourages healthier hair growth and strengthens hair.
