Answer:
Water potential is the potential energy of water per unit volume relative to pure water in reference conditions. Water potential quantifies the tendency of water to move from one area to another due to osmosis, gravity, mechanical pressure and matrix effects such as capillary action.
 
        
                    
             
        
        
        
It is the subtance betwen  the person or the object 
        
                    
             
        
        
        
That's what stars do all the time.  
For example, in the sun (and MOST other stars), deep down in the center 
of the sun's core, two atoms of Hydrogen get squashed together so hard 
that they blend into one atom of Helium AND release some energy.  
That's where the sun's energy all comes from.  It's called "nuclear fusion".  
It needs tremendous temperature and pressure to happen.  We know how 
to do it, but we can't control it.  So far, the only thing we've ever been able 
to use it for is Hydrogen bombs.    
There are 92 elements on the Periodic Table that are found in nature, 
plus another 20 or so that have been made in the laboratory, but only 
a few atoms of them.
        
                    
             
        
        
        
Answer: B, they can land themselves now
Explanation:
 
        
             
        
        
        
Answer:
<em>A) Beam B carries twice as many photons per second as beam A.</em>
Explanation:
If we have two waves with the same wavelength, then their intensity is proportional to their power, or the energy per unit time.
We also know that the amount of photon present in an electromagnetic beam is proportional to the energy of the beam, hence the amount of beam per second is proportional to the power. 
With these two facts, we can say that the intensity is a measure of the amount of photon per second in an electromagnetic beam. So we can say that <em>beam B carries twice as more power than beam A, or Beam B carries twice as many photons per second as beam A.</em>