Teaching NVS TGT 2024 Test Series General Knowledge Ecology and Environment Ecology and Functions of an ecosystem
Which one among the following statements best explains biological magnification ?
1
Pollutants are accumulated in tissues increasing concentration along the food chain
2
DDT is a non biodegradable substance which exhibits biological magnification
3
Demand of oxygen increases , as the number of organisms increase in number
4
Heavy accumulation of pollutants in the environment year after year