An indicator species<span> is an organism whose presence, absence or abundance reflects a specific environmental condition. </span>Indicator species<span> can signal a change in the biological condition of a particular ecosystem, and thus may be used as a proxy to diagnose the health of an ecosystem.
</span>
        
             
        
        
        
The answer is A because in the process of mitosis and meiosis chromosomes are single-stranded groups that are condensed to chromatin when the process of division of cells chromosomes replicate to make sure that the new daughter cells received the correct number of chromosomes
        
             
        
        
        
I think its B. It sounds familiar
        
             
        
        
        
Answer:
more ; the proofreading system
Explanation:
Transcription is considered to be more error prone and this is mainly attributed to differences in the proofreading system.
Hope this helped! :^)
 
        
             
        
        
        
Answer:
Explanation:
Matter can change form through physical and chemical changes, but through any of these changes matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.