People just don't care anymore about what they do. 
        
             
        
        
        
The answer is -Homeostasis 
The human body has the ability to maintain a constant internal environment so that every organ function properly. Maintenance of a constant internal conditions is called homeostasis. For examples, a healthy human body functions optimum at normal temperature which is 37°C. If the body temperature increases well above 37°C, then by self-regulatory process, our  body brings down temperature to the normal. This is homeostasis. 
 
        
             
        
        
        
Answer:
<u><em>The correct option is the presence of a specific hormone receptor.</em></u>
Explanation:
Every cell membrane contains certain cell surface receptors which detect an extracellular molecule and allow it to perform function inside that particular cell. The cell surface receptors receive and transmit signals. 
For a specific hormone to function inside a particular cell, the cell must possess a specific hormone receptor embedded in the plasma membrane which will detect the hormone and allow it to function inside the cell. 
 
        
             
        
        
        
Answer:
https://www.positive.news/society/5-possible-solutions-overpopulation/
Explanation:
 
        
                    
             
        
        
        
Answer:
In developmental biology, embryology would be the early cellular stages of development. 
Explanation: