<span>The lungs are the organs that are most crucial in
expelling cellular carbon dioxide waste. Lungs are the most important organ of
the respiratory system. They excrete these wastes through the process of
diffusion and exhalation. Without the proper excretion of carbon dioxide by the
lungs, the blood will be left without oxygen and might be toxic to course
through the bloodstream. The lungs are responsible for converting unoxygenated
blood into oxygenated blood. Through this process carbon dioxide is expelled as
the by-product.</span>
        
             
        
        
        
Those are DNA sequences. Each sequence of three bases in a DNA strand is called a codon. Each codon codes for a particular amino acid. So for example the codon AGC stands for the amino acids serine. The codon TGG stands for the amino acids threonine. The codon CTG stands for aspartic acid. So, the DNA sequence AGCTGGCTG codes for the amino acid sequence serine-threonine-aspartic acid. I hope the helps! :)
        
             
        
        
        
Nucleus is the cell part that contains an organism's genome. 
        
                    
             
        
        
        
gene flow or migration between two populations will help maintain similarities between the species, therefore preventing (or slowing down) the process of speciation. and when the environment changes rapidly, this can cause an overall decrease in population size because of a failure to adapt adequately to environmental changes. i hope this helped <3
 
        
             
        
        
        
Nitrification or nitrogen fixation