Plastic is taken from the natural, organic substances called Cellulose, Coal, Natural Gas, salt and Crude oil.
 
        
             
        
        
        
Answer:straum and straum
Explanation:
they both have the same name
 
        
             
        
        
        
Answer:
Non-zero digits are always significant. Any zeros between two non-zero digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant.
Explanation:
 
        
             
        
        
        
The anwser is number 2 I think,
Hope it helps!
 
        
                    
             
        
        
        
Answer:
B
Explanation:
The lung not being not been able to exchange and remove the carbon dioxide created a health problem due to the concentration of hydrogen ions (H+) being 10X being higher than in normal body. Although the difference is just about 1, it will result increase hydrogen ion concentration 10 times, similarly an increase or decrease in pH from 4 to 2 will give rise to 100 times increase in hydrogen ion concentration. It can equally be applied to hydroxyl in concentration.