Folk culture- the culture traditionally practiced primarily by small, homogenous groups living in isolated rural areas. Popular culture- the culture found in large, heterogeneous societies that share certain habits despite differences in other personal characteristics.
        
             
        
        
        
Answer:
d
Explanation:
Condensation nuclei are important because they form the basic building blocks of clouds. The condensation nuclei are tiny particles on which water vapor molecules form to create the most basic elements of clouds. 
Later, other water molecules continue grouping around the original condensation nuclei and get larger to form raindrops. 
 
        
             
        
        
        
Answer:
Crust: the outermost layer of Earth
Mantle: located between the core and the crust; region of hot, slow-flowing solid rock
 
Convection: the movement of matter that results from differences in density caused by  variations in temperature
 Core: extends from below the mantle to the center of the Earth
 Lithosphere: the outermost, rigid layer of Earth
 
Asthenosphere: the layer of weak or soft mantle that is made of rock that flows slowly;  tectonic plates move on top of this layer
 
Mesosphere: the strong, lower part of the mantle
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