Which of the following is NOT a benefit of plant biotechnology
a. moving herbicide resistance to weeds
b. increasing the strength of cotton fibers
c. producing plants that are resistant to herbicides
d. introducing vaccines to specific types of plants

a.moving herbicide resistance to weeds

Explanation:

Herbicides are chemicals that are used to kill unwanted plants that can affect the growth of crops. Herbicide resistant plants are those that do not die following exposure to a herbicide.

Moving herbicide resistance to weeds would mean that weeds do not die following herbicide treatment, which is not a desired effect of biotechnology. Therefore, a is correct.

answer; /// i believe the correct answer is (reactants);

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.