Answer;
 A. leaf to mouse
Explanation;
-Considering the fact that the amount of energy at each trophic level reduces as it moves through an ecosystem from the lowest trophic level which happens to be producers (plants).  And about 10 percent of this  energy at any trophic level is transferred to the next level since the rest is lost largely through metabolic processes as heat.
-It means that the lower the trophic level the higher the energy obtained, for instance from producers to primary consumers, more energy is passed since it is the first passage of energy. 
 
        
                    
             
        
        
        
C...the key is that they are photosynthetic...so they produce oxygen (like plants)!
 
        
                    
             
        
        
        
Answer:
Specitation increases biodiversity, while extinctions decrease biodiversity.
Explanation:
Biodiversity is the variety of life on Earth or some specified geographic area of the planet; the diversity of life occurs at the genetic level, at the species level, at the ecosystem level, and in evolutionary lineages.
 
        
                    
             
        
        
        
Answer:
Carbohydrates are only function as a source of energy but also as an energy reserve.
Explanation:
The carbohydrates in glycolysis make up the energy currency that is ATP and in glycogenogenesis they make up glycogen, which is the energy reserve, that is why according to the state in which the metabolism or lifestyle of the person, carbohydrates can have different uses.