A. B. D. C. D, A, A, C, B, B, D, D
        
             
        
        
        
Answer:
Valence electrons are outer shell electrons with an atom and can participate in the formation of chemical bonds. In single covalent bonds, typically both atoms in the bond contribute one valence electron in order to form a shared pair. The ground state of an atom is the lowest energy state of the atom.
 
        
             
        
        
        
True 
~Nightcore 
Hope this helped
        
             
        
        
        
#1.
<em>Car </em>1<em> weighs </em>300 kilograms<em> and is moving right at </em>3 meters per second (m/s)
#2.
Law of conservation of momentum
momentum before collorion = momentim after collosion
MV + mv = MV' + mv'
1500x25+ 1000x5
37500 + 15000
 
        
             
        
        
        
The answer is A.
Hydroelectric, which is usually generating electricity through use of a dam. 
Solar, energy from the Sun.
Biomass, organic material formed from plant matter.