Answer: food chains or webs
In an ecosystem, energy from the sun is transferred by the way of food chains or webs. A food chain is a linear sequence of organisms through which food and energy is passed as one organism eats the another. A food web is the interconnection or relation of food chains. In a food chain energy is distributed among the trophic levels. Plants are primary producers which traps energy from sun for photosynthesis and belong to first trophic level in the food chain. The energy of sun present in plants is transferred to subsequent higher trophic levels when plants are consumed by other organisms. 
 
        
                    
             
        
        
        
D i believe, i could be wrong though
        
                    
             
        
        
        
Answer:
The living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants. They make their own food.
Explanation:
 
        
                    
             
        
        
        
Answer:
The first plant demonstrate stunt growth. The second one demonstrate rapid growth 
Explanation:
The first one lacks proper care and is not exposed to sunlight. The second one is the opposite of the first one