Answer: An atom is the smallest unit of ordinary matter that forms a chemical element, they are like building blocks because they form together to make up everything on this earth.
Explanation:
i done know my way around this here terrain 
 
        
                    
             
        
        
        
Answer:
All of them seems true tho 
 
        
                    
             
        
        
        
Borders are still guarded zealously and fought for - via wars when required and when not required in equal measure. I see nations fighting
 over water  that preciously scarce resource of the future. I see that terrorists still abound - the Osama Bin Laden types still roam the Earth terrorizing countries and peoples with newer weapons and newer methods of instilling terror. I see that the United States is no longer the sole superpower of the world -- the most powerful country on Earth. I see the most powerful countries dominating the world as being China, India, Brazil and Russia in that order. I see that China and India have become the equivalent of the US and the erstwhile Soviet Union - fighting another Cold War between them and competing for resources and influence around the world.
        
                    
             
        
        
        
Your nervous system could be damaged in a car accident due to texting
        
                    
             
        
        
        
Answer:
Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio of purine and pyrimidine bases, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.