Answer:
Humans are now responsible for causing changes in the environment that hurt animals and plant species. We take up more space on Earth for our homes and cities. We pollute habitats. We illegally hunt and kill animals. We bring exotic species into habitats. All of these activities take resources and habitats away from plants and animals.
Explanation:
 
        
             
        
        
        
Answer:
Referred pain
Explanation:
Referred pain may be defined as the pain perceived at differnet location of body other than the individual pain location.
Referred pain depends upon the intensity and duration of the pain. Refereed pain is generally generated by the potent mechanism of temporal summation. Referred pain is the condition of the body  in which the uninjured body part experiences pain due to the injury of another body part.
Thus, the correct answer is option (b).
 
        
             
        
        
        
Its phytoplankton release oxygen its a long process on how though