I believe the answer is anaerobic respiration. Sorry if that’s wrong though! :)
        
             
        
        
        
Answer: They can be either of the same species (intraspecific interactions), or of different species (interspecific interactions). These effects may be short-term, like pollination and predation, or long-term; both often strongly influence the evolution of the species involved. A long-term interaction is called a symbiosis.
Explanation:
 
        
                    
             
        
        
        
The answer is b)
The niche is the job the animal does in it's habitat to contribute to the habitat.
        
             
        
        
        
Cast- solid copy 
Mold- hollow form 
Carbon film- details left after an organism decays 
Trace fossil-record of an organisms activity 
Petrified fossils- living things turned into rock