I think it’s tissue I just did it
        
             
        
        
        
Answer:
a. neutron
Explanation:
A neutral atom has the same number of protons and electrons because in order for it to be a neutral atom the charges must be the same. 
a neutron has no charge therefore it can be different then the number of protons and electrons in a neutral atom as it won't affect the charge.
 
        
             
        
        
        
Answer:
provide rewards to use solar power
Explanation:
Using solar power we can avoid bad energy like Coal, oil, natural gas, uranium and water from a dam.
All these kinds of energy producing air pollution, water pollution, or greenhouse gases.
But solar power has some toxic materials, also, using a lot of water to keep and clean solar power. In addition, if we create a solar power near a river or lake may cause damage.
We must think in these factors before to do a solar power.