MCQOPTIONS
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				| 1. | 
                                    The accumulation of non-biodegradable substances in a food chain in increasing amount at each higher trophic level is known as: | 
                            
| A. | Accumulation | 
| B. | Eutrophication | 
| C. | Pollution | 
| D. | Bio magnification | 
| Answer» E. | |