Use n1/V1 = n2/V2
.1/2 = .4/V2
.1V2 = .8
V2 = 8 L or D 
        
                    
             
        
        
        
Answer:
Vegetation plays an important role in the water cycle by preventing soil erosion and increasing groundwater levels. Green plants also release water vapor in the air as a by-product of photosynthesis, thus involving groundwater in the water cycle.
Explanation:
 
        
             
        
        
        
Answer:
Stronger!
Explanation:
The <u>stronger</u> the forces among the particles in a sample of matter, the more rigid the matter will be.
 
        
             
        
        
        
Atomic number is number on periodic table, mass is how big element is
        
             
        
        
        
Answer:
Herbivores would increase causing producers to decrease.
Explanation:
 If the carnivores are gone, herbivores wouldn't get eaten and increase, and more herbivores mean less producers available.