<span>The amount of dissolved oxygen in water may decrease
because of the increase in organic matter in the water. <span>Aquatic organisms breathe and use oxygen. Large amounts of
oxygen are consumed by the decomposition of bacteria (when there are large
amounts of dead matter to decompose, there will be a significant number of
bacteria). Examples: dead organic matter (algae), wastewater, garden waste,
oils and fats, all this results in a decrease in dissolved oxygen in the water.</span></span>
        
                    
             
        
        
        
The speed at the sound barrier is 343 m/s
 
        
                    
             
        
        
        
Answer:
The bonds can shift because valence electrons are held loosely and more freely 
Explanation:
Please give brainliest if you can,have a good day<3 :)
 
        
             
        
        
        
Answer:

Explanation:
According to the free-body diagram of the system, we have:

So, we can solve for T from (1):

Replacing (3) in (2):

The electric force ( ) is given by the Coulomb's law. Recall that the charge q is the same in both spheres:
) is given by the Coulomb's law. Recall that the charge q is the same in both spheres:

According to pythagoras theorem, the distance of separation (r) of the spheres are given by:

Finally, we replace (5) in (4) and solving for q:
