Answer:D) all of the above
Explanation:these are all correct because they all affect our environment
 
        
                    
             
        
        
        
Answer: b dead organisms And waste are recycled throughout the tropic levels.
Explanation:
 
        
                    
             
        
        
        
Answer:
The two forms interbreed and their offspring survive and reproduce well.
Explanation:
When talking about classification of species, one of the first features observed is the species fitness, which describes the reproductive success or their ability to leave to their successive generations the most copies of their genotype. When different species that were recently divided into 2, by geographic isolation, for instance, usually there is no genetic compatibility, and if its possible to produce offspring, there might be some development issues like infertility.