Explanation:
When yeasts eat sugar and turn it into energy, they also produce carbon dioxide. 
 
        
             
        
        
        
Answer:
Option (D)
Explanation:
In terms of chemistry, a catalyst is usually defined as the substance that is commonly used in a reaction in order to increase the rate of reaction, without getting consumed. It helps in the reduction of activation energy.
In the given case, the lever or a person can be considered as a catalyst because both of these will increase the efficiency (or rate) in removing the rock from the top of the perch. Thus, the lever or the human will remain the same after the removal of rock as a catalyst can be recovered after the reaction.
Therefore, the correct answer is option (D).
 
        
             
        
        
        
Humans cannot convert the sun's energy into glucose for themselves because humans lack <span>chlorophyll.</span>
        
                    
             
        
        
        
we need to see the diagramph 
 
        
                    
             
        
        
        
A triploid  cell   is  the    structure   form   during  angoisperm  fertilization. The   cell  are created   in  the  process  known   as  double   fertilization  into   the  endosperm   which  is   mostly   are    polyploid. These  are  typicallly  triploids   that  is  they   contain  three  sets  of  chromosomes   but  they   varies  widely  from   diploid  (2n)  to   15N.