I think the correct answer among the choices listed above is option B. Decrystallization is not a method by which minerals form. Decrystallization is the breaking down of the mineral's crystalline structure therefore forming other products not a mineral.
        
                    
             
        
        
        
Answer:If  you plant the same crop in the same place each year  zaps nutrients from the earth and leaves soil weak and unable to support healthy plant growth. ... The effects of mono cropping on the environment are severe when pesticides and fertilizers make their way into ground water or become airborne, creating pollution.
Explanation:
Hope I helped ! :)
 
        
             
        
        
        
B.evaporation because when heated water evaporates
        
             
        
        
        
Let's call your number n. Twice your number is 2n. The product of your number and twice your number (so n multiplied by 2n) is 128.
Set up an equation:
n × 2n = 128
2n² = 128
Divide both sides by 2:
n² = 64
Square root both sides to isolate n:
n = 8
The question asks for half your number, so just half 8:
8 ÷ 2 = 4.
Half your number is 4.