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Solution


Q.

Take a look at the picture carefully and answer the following questions from (i) to (v):

 

(i) While designing an aquarium what are the things you would like to include to make it a complete ecosystem
1 Fishes, aquatic plants, pleco fish (algae eating fish), aerator, pebbles, fish food  
2 Fishes, grass, plants, pleco fish (algae eating fish), fish food.  
3 Fishes, plants, oxygen pump, food, stones.  
4 Animals, fishes, plants, oxygen pump, food.  

Ans.

(1)