A great video lecture conducted by experienced biology teacher on 11th class biology chapter 1 topic1 biology and the service to mankind protection and conservation to environment. Get full understanding or ask any questions.
Biology services in food production and preservation, ch 1, lec 4, Biology and the Service to Mankind & Protection and Conservation to Environment - Inter Part 1 Biology
28:30
Biology and the Service of Mankind, ch 1, lec 4, Biology and the Service to Mankind & Protection and Conservation to Environment - Inter Part 1 Biology
13:58
Disease Control, ch 1, lec 4, Biology and the Service to Mankind & Protection and Conservation to Environment - Inter Part 1 Biology
23:47
Explain Cloning, ch 1, lec 4, Biology and the Service to Mankind & Protection and Conservation to Environment - Inter Part 1 Biology
11:10
Biology and Service to Mankind and Protection and Conservation to Environment, ch 1, lec 4, Biology and the Service to Mankind & Protection and Conservation to Environment - Inter Part 1 Biology
21:26
