Answer: The answer is D mate 
Explanation:
 
        
             
        
        
        
B.) Glucose because in order for that person to have energy that person has to have sugar to be active...
 
        
             
        
        
        
Answer:
Trophic cascades are powerful indirect interactions that can control entire ecosystems. Trophic cascades occur when predators limit the density and/or behavior of their prey and thereby enhance survival of the next lower trophic level.
Explanation:
 
        
                    
             
        
        
        
The answer would be about  18.
<span>Christmas trees give, in fact, a lot of oxygen and in return they consume a lot of carbon dioxide. 
</span><span>The oxygen produced by each tree depends on several factors, but there is a estimative. In about 1 acre of land, there are enough trees to produce the oxygen necessary for 18 people to breath during a whole year!
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Wind can use sand as an abrasive to wear away rock.
Option (d);
<u>EXPLANATION: </u>
- Rocks are broken down into smaller pieces with sand or water flowing over the rocks at a great speed. 
- Many solid particles like soil, sand, mud, etc. move down the rocks by downhill or wind blowing in the downward direction and called wind abrasion.
- Sand blown with the help of high speed, sandblast away the rocks.
- Abrasion is a process in which sand is blown in downwards direction with the help of wind and that wears away the rock's surface over time. 
- Thus, wind uses sand as an abrasive to wear away a rock.