Which two statements describe disadvantages of genetic engineering?
A. Pollen from genetically engineered crops grown on farms can spread to nearby wild plants.
B. Crops can be genetically engineered to produce food more efficiently than traditional crops can.
C. A genetically engineered crop that has genes to resist pests can be grown without chemical pesticides.
D. A genetically engineered crop that is resistant to insect pests could also harm helpful insects.

The following 2 statements describe disadvantages of genetic engineering:

A. Pollen from genetically engineered crops grown on farms can spread to nearby wild plants.

D. A genetically engineered crop that is resistant to insect pests could also harm helpful insects.

Explanation:

A. Pollination in plants is a mode of self- fertilization in plants which require the transfer of pollen from anthers to the stigma. But if the plant is genetically modified it will have its genes altered and pollens are the genes of plants.  These pollens move into wild type and causes changes in the crop produced from wild type.

D. Some insects like butterfly and honeybees eat the genetically modified plants may develop resistance to the protein that is lethal to them.

what's the question ?

"a.) well–developed vascular system."