DescriptionBiotic components, or biotic factors, can be described as any living component that affects another organism or shapes the ecosystem. So the answer would be 1 an 2
        
                    
             
        
        
        
The Krebs cycle is the answer
        
             
        
        
        
Carbon dioxide is an example of a Greenhouse gas transported by the cardiovascular system to excretory organs and tissues
        
             
        
        
        
<span>Taxonomy is the classification or grouping of organisms into groups, based on shared or similar characteristics. The criteria used for including an organism in a group can be controversial. An example of a taxon is the class Reptilia.</span>