Ash can be harmful to an environment. It mostly depends on how much ash there is though. If a volcano erupted such as Mt. St. Helen's then yes that can harm an environment. Ash can cover the sky and block out the sun for days before disappearing and that will affect the life of plants 
        
                    
             
        
        
        
The longitudinal halves of a chromosome that has undergone replication are known as chromatids.  They will not be called chromosomes until after they are separated during Mitosis.  Mitosis distribute the chromatids to daughter cells as a cell divides.  The chromosomes are initially replicated in cells undergoing Meiosis, as in preparation for the mitotic division, but then, these chromosomes are divided twice so that four daughter nuclei are produced, each having the haploid chromosome number. 
        
             
        
        
        
Catabolism (a form of metabolism in which cells are breaking down larger units into smaller units). 
Another answer is cellular respiration
        
                    
             
        
        
        
Answer:
Well, you will need to see how this fungus looks like. I would say it is a green, black, and brown color and it would be classified as an mold type fungus.
 
        
             
        
        
        
It provides energy for the cell to build, repair, and reproduce. Cells needing more energy have more mitochondria.