Because our brains are the most developed out of all of the other species on this planet. Also, we require the most maintenance to survive. We can’t live in the ocean, such as a fish, shark, dolphin, etc. but we also can’t live in the forest such as bears, deer, coyotes, etc. we need to live in a stable environment when we will have enough food to survive as well to live in certain temperatures that are best suited for our kind. Hopefully that helped a little bit
        
             
        
        
        
They are found in bacteria and eukaryotes is false
 
        
             
        
        
        
The purpose of ethical guidelines for handling of experimental subjects is to ensure the safety and well-being of all living creatures in an experiment.
Ethical guidelines include issues such as human rights, animal welfare, safety compliance with the law, conflicts of interest,  health standards..
Ethical guidelines are the norms for the acceptable and unacceptable behaviors of the researchers.
 
        
                    
             
        
        
        
Answer:
A
D
Explanation:
mark me brainliest even if im wrong but im positive im right