(A). Donkey and horse should be considered one single species because they can successfully mate and produce an offspring. (B). Donkey and horse are two different genuses. (C). Mule is a separate species. (D). Mule is neither a donkey nor ...

(A). Green alga (B). Snow leopard (C). Rana tigrina (D). China rose

(A). a-iii, b-i, c-iv, d-ii (B). a-iii, b-iv, c-i, d-ii (C). a-ii, b-i, c-iii, d-iv (D). a-i, b-ii, c-iii, d-iv