Biodiversity refers to the variety of plants, animals, insects, birds, living in a particular place or habitat.
HIV directly attacks CD4 helper lymphocytes directly. (D)
I think option c is right that is <span>The introduction of a new gene that can bind with the abnormal gene to inhibit its action.
Hope it helps .</span>
I think the first word is (Haploid) and the second one (Zygote)
