The Answer -
A. The amount of land available for lumber production decreases. 
Do to the Urban development there is fewer land and less trees to grow and cut down for lumber, which can lead in a decrees if production for lumber.
        
                    
             
        
        
        
The answer is B. The specific heat means the heat amount the substance needs to absorb when the temperature increases 1℃. The high specific heat means that it needs a huge amount of heat when increase just 1℃. For A, the dissolved salts can help decrease the freezing point.
        
             
        
        
        
Explanation:
A rock falling through Earth's atmosphere from outer space is called a asteroid
 
        
             
        
        
        
Answer: Volcanic materials ultimately break down and weather to form some of the most fertile soils on Earth, cultivation of which has produced abundant food and fostered civilizations. The internal heat associated with young volcanic systems has been harnessed to produce geothermal energy
Explanation:
 
        
             
        
        
        
Answer:A concave mirror is a spherical mirror with the surface of reflection is curved in an inward direction while a convex mirror is a spherical mirror with a reflecting surface with an outward bulge.
Explanation:
Hope this helps :D