Match the following.

	Column-I		Column-II
(a)	Endemic species	(i)	A species facing a very high risk of extinction in the wild.
(b)	Endangered species	(ii)	A species introduced by humans outside the natural range.
(c)	Alien species	(iii)	Species that occur naturally in a habitat.
(d)	Indigenous species	(iv)	Distribution of a species limited to a small geographic area.

	a	b	c	d
1.	iv	iii	ii	i
2.	iv	ii	iii	i
3.	iv	i	iii	ii
4.	iv	i	ii	iii