find error in the following passage-

Our earth have been blessed with a large (a)

Variety of resource, like water (b)

forest or minerals. But only (c)

human beings can discovers, (d)

develop

or convert this resources into (e)

wealth. Thus the greater resource (f)

of an earth is the human being.

Our Earth has been blessed with a large variety of resources, like water, forests and minerals. But only human beings can discover, develop and convert these resources into wealth. Thus the greatest resource of our/the Earth is human being.

(a) have been - is

(b) Variety-variety

(c) or - and

(d) discovers - discover

(e) this - these

(f) greater - greatest