Answer:
More of the world's population is now concentrated in heavily populated urban areas known as <u>megalopolis</u>. This is quite a contrast from the past, when <u>indigenous</u> or native groups were either farmers or <u>nomads</u>— hunters and gatherers who moved between places in search of food. Advanced technology has led to <u>globalization</u>, the integration of world economics and cultures, in the world's more developed countries. This integration requires increased <u>conservation</u>, the responsible use and management of natural resources.
 
        
             
        
        
        
The answer should be 'D' but it can depend based on teachers, if your teacher has talked often about general reference sites then they might want 'A'. 
        
                    
             
        
        
        
<u>Advantages:</u> 
1. we can send e - mail faster across the universe which maintail a good relationship
2. online toutoring 
3. helpful games give mind relaxation 
4. we can know everything which is happening in the world
5. it helps to improve our knowledge
<u>D</u><u>isadvantages: </u>
1. it is not good for eye site 
2. it spoil kids by taking out them from studies
3. it give more laziness to the people
4. it is also responsible for viral diseases
5. it release harmful radiation which is harmful to us etc
 
        
             
        
        
        
You really could just look it up on google