MCQOPTIONS
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				| 1. | 
                                    The producers in ecosystems include which of the following? 1. Prokaryotes 2. Algae 3. Plants | 
                            
| A. | 1 only | 
| B. | 2 only | 
| C. | 3 only | 
| D. | 1, 2, and 3 | 
| Answer» E. | |