North carolina ranks second in production of christmas trees in the united states. scientists in north carolina are developing a clone bank of disease and insect resistant trees. how would this be beneficial to christmas tree growers

Correct Trees would grow faster

The insect resistant plants are genetically modified in such a way that they contain some toxic substance for the insects. when the insect tries to infect such plant the toxic substance is released from the plants and it will kill the insect and the plant stay away from healthy and give high productivity to farmers.

Example: Bt crops

the answer for this question would be d. glaciers