This video lecture from Introduction (F.Sc. first year Biology) covers: How biology can be used for the help and welfare of mankind. It includes various methods like food production, plants production using genetic engineering techniques, biological control, hydroponic culture technique and pasteurization etc. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping credits to Maktab.