I think d would be the answer.
        
                    
             
        
        
        
The size has gotten smaller, they last longer, easier to carry around, safer, etc
        
                    
             
        
        
        
The one that accurately describes the products of a reaction is : B. new substances that are present at the end of a reaction
For example the process of photosynthesis transform CO2 and other nutrients into O2 and H2O
hope this helps
        
                    
             
        
        
        
To find the surface area of a single cube we first nees to take the cube root of 8cm3 which is 2. 
Now we know that the length of each side is 2 and we can find the area of one side by doing 2x2 which is 4. 
To find the total surface area of one cube we do 4 times 6 side giving us a total of 24cm2. 
To find the total surface area of the 8 individual cubes, we multiply 24cm2 by 8 to give us a total of 192cm2. 
Now to find the total surface area of the one large cube, we know that each side of one of the small cubes is 4cm2 and the large cube is set up so that there are two levels of four cubes right on top of each other. So, the total area of each side of the large cube is 4cm2 times 4 which gives us 16cm2.
Then we multiply 16cm2 by 6 sides to give us a total surface area of 96cm2.
The ratio of the surface area of the single large cube comapred to the total surface area of the single cubes is 96:192 
We can further simplify this ratio: 
96:192 
48:96
24:48
12:24
6:12
3:6
1:2 
        
             
        
        
        
<h3>Answer</h3>
m/s^2 (meter per sec square)
Explanation:
acc = change in velocity/time 
= distance/time
----------------
time 
= m/s
------
s
=m/s^2