Answer: Option D 
Explanation:
The practice which has been prevailing from a long time is considered as culture.Farming is also a type of culture which is being practiced from a longer period of time in the society.
The farming is also a type of culture which was invented somewhere and started spreading from there to other places.
This practice helped mankind  in providing food and resources to the people of nation.
 
        
             
        
        
        
When boys go through puberty their voices change and they start to grow hair on different area of their body such as their chest, face and pubic area. Also they will start to get acne
 
        
                    
             
        
        
        
Answer:
You could use a magnet to collect the iron, and then wash the sawdust off. Hope this helps :)
 
        
             
        
        
        
Answer:
its D.
Explanation:
Bacteria change nitrogen gas to useable compounds that can be absorbed by plants.   
Brainliest plz
 
        
             
        
        
        
Answer:
Praying mantis cannibalism explained.  When a female praying mantis bites the head off her sexual partner, it is probably not out of anger. ... The scientists tracked the flow of radioactive proteins through the bodies of the cannibalistic females, and through their eggs.