The answer to your question is D. Heat Transfer
        
                    
             
        
        
        
The answer is A. Being a liquid at room temperature, surface tension, and that ice floats.
 
        
             
        
        
        
D. All of the above. 
Trenches are the deepest known point on Earth. 
Trenches are formed from subduction or the movement of tectonic plates.
Water pressure is extremely high in trenches. The bottom of a trench exerts more than 1,000 times the atmospheric pressure at sea level.
        
             
        
        
        
Answer:
The reason why the ecosystem has many different kinds of plants is because of the soil, or the environment around them. Also, some biotic factors like animals or humans could be the reason. The humans may have planted seeds there, and probably some abiotic things like soil could also be the reason why. The plants that grow there receive a lot of rain, or the limiting factor is the rain, and the type of plants that grow there don't need much water to survive.