The most important human activity, leading to the
extinction of wildlife, is
(a) pollution of air and water
(b) hunting for valuable wildlife products
(c) introduction of alien species
(d) alteration and destruction of the natural
habitats.
extinction of wildlife, is
(a) pollution of air and water
(b) hunting for valuable wildlife products
(c) introduction of alien species
(d) alteration and destruction of the natural
habitats.