Bacteria is good, but there is some bad. in this case, your talking about your digestive track therefore, this is good bacteria and what bacteria does is it breaks down the stuff that your body cannot break down by itself so the answer is C I hope this helped and I hope it was the branist answer
        
             
        
        
        
The carbon fixation occurs in the stroma, which is the colourless fluid that bathes the grana inside the chloroplast. It is in the stroma that the biochemical <span>reactions of reduction take place, one of them being</span><span> </span><span>carbon fixation. This is a light-independent reaction that is part of Calvin cycle. The stroma is where the enzymes that catalyse these reactions can be found.</span>
        
                    
             
        
        
        
<u>50%</u>  of offspring will have brown eyes
Explanation:
A heterozygous individual will have the genotype <em>Rr </em>while an individual who is homozygous recessive will have the genotype <em>rr.</em> A cross between the two will result in offspring with phenotype <em>Rr</em> and <em>rr</em> in the ratio of 1 : 1. This can be observed from the Punnet square attached.  The same is the case for the phenotype. The ration of brown eyes to red eyes will be approximately 1 : 1
 
        
             
        
        
        
The answer is Mercury! Hope this helps
        
                    
             
        
        
        
Answer: 
In an aquatic ecosystem, the plants are present both on the subsurface and bottom bed rock of the aquatic body. These are the producers of the ecosystem because they provide food to the living organism in the lake.  In day plants growing on the surface of the water takes up carbon dioxide from the atmosphere which is being absorbed in the water, to conduct the process of photosynthesis. These plants release oxygen, which supports the life of aquatic animals. In this way plants limit the abundance of carbon dioxide in water. But in night plants undergo a process of respiration, which releases carbon dioxide. The abundance of carbon dioxide increases in night along with the carbon dioxide being absorbed from the atmosphere. Therefore, concentration of carbon dioxide increases considerably in night as compared to day.