Answer:
It was a multi celled organism
Explanation:
 
        
             
        
        
        
Rocks,water,pebbles = Abiotic 
Fish =Biotic
        
             
        
        
        
Answer:
These crops where improved  with technology, production of high-yielding variety, and improve farm practices. All these ensured  the crops of green revolution had increase yield. 
Explanation:
Through  genetic engineering, high-yielding variety of cereals e.g wheat, maize, rice, were genetically engineered so that certain features which enhanced increased productivity were selected for.
Use of fertilization, the adoption of mechanization,good cropping and farming system are other factors which enhanced yield of these crops. Specifically, these crops were modified to enhance their Nitrogen uptake, which promotes rapid growths.
 
        
             
        
        
        
The dead organisms are recycled back by the activity of decomposing or decomposition. I hope this helps!