Hi! 
There are many causes related to the depletion of rain forests. One would be fires. Another would be trees being cut down almost every year. The main destruction cause would be us humans.
A possible solution for stopping the depletion of rain forests would most probably be to make sure that the animals, plants, and the rain forest itself is healthy. If it is not, there may be serious trouble. Another solution would probably be for us humans to leave the rain forests alone. Alot of fires are caused by us, and chopping down the trees of the rain forest kills the animals, plants, and of course the trees in that rain forest, causing the rain forest to eventually deplete. 
Hope this helps, have a wonderful day/night! :)
 
        
                    
             
        
        
        
<span>Hydroelectric power is produced as water passes through a dam, and into a river below. The more water that passes through a dam, the more energy is produced. Once a dam is built, an artificial man-made lake is created behind the dam. Electricity is produced by a device called a turbine.
HOPE IT HELPED </span>°ω°
        
             
        
        
        
The correct answer is - (1) rising expanding cooling condensation.
At first there's the evaporation of water, since the water vapor is less dense than the air it rises up and starts to expend as it goes further upwards in the atmosphere. Once it reaches the upper layers of the troposphere than the cooling process starts because the temperature is decreasing with the altitude. Because of the cooling the process of condensation will start taking place and thus the formation of clouds were the water vapor returns to liquid form and creates rain. The cycle repeats its self all the time.
 
        
                    
             
        
        
        
Sun and Earth distance 149.6 million km
        
             
        
        
        
This paragraph should help you out :)