If a person is injured by the shot of a gun and all the pellets could not be removed, it may cause poisoning by :

In check up of 100 injured persons, injured in an accident in an industry, the number of injured persons by eye, hand and leg are respectively 20,50 and 70. The 44 injured persons are injured by eye and hand or hand and leg or eye and leg. Find the number of injured persons who are injured by all eye, hand and leg.

Give reasons for the following. Gall bladder removal may cause diarrhoea.

Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?