The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that  B) tropical regions have more available water and higher levels of solar radiation.
Hope this helped!! 
 
        
             
        
        
        
Answer:
its D commensalism, one benefits from it and the other gets no harm
Explanation:
 
        
             
        
        
        
Answer:
It says that what happens to the mass of copper sulphate which is already dissolved in any kind of solution when the temperature increases.
 
        
                    
             
        
        
        
There are three types of hazards
- physical such as knives, filet bone
- chemical such as cleaner, chlorine (chemical substances)
- biological such as bacteria, mold (live organisms)
Because filet bone is a physical hazard the answer is D (filet bone)
 
        
             
        
        
        
Answer:
53
Explanation: You do 36 + 17 = 53 neutrons