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. 
 
        
                    
             
        
        
        
I believe these are the answers:) best of luck!
 
        
        
        
Answer:
Stem cells provide new cells for the body as it grows, and replace specialised cells that are damaged or lost. They have two unique properties that enable them to do this: They can divide over and over again to produce new cells. As they divide, they can change into the other types of cell that make up the body.
<u>I hope this is what you where looking for </u>
 
        
                    
             
        
        
        
The answer is A) a patient that can receive o- o+ b- and b+ is b+
        
             
        
        
        
Answer:
B
Explanation:
only plants convert solar energy to chemical energy.