Answer:
A: crust, B: mantle, C: outer core, D: inner core.
Explanation:
Do you learn this in 6-7th grade
 
        
             
        
        
        
Water means it is the mixture of hydrogen and oxygen. As we know that
hydrogen is colourless as well as oxygen is also colourless gas. 
So at last when hydrogen and oxygen reacts with one another and they
form H2O means water. If both are colourless so their product will also
be colourless. So water is seen colourless. 
        
             
        
        
        
Answer:
Negative
Explanation:
There are more electrons (negative charge) than there are protons (positive charge).
 
        
             
        
        
        
Explanation:
The 6-kingdom system of classification divides the former kingdom Monera into two kingdoms, Eubacteria and
Archaebacteria