Answer:
i'm in 9th grade and i'm in high school student to learn my class!
Explanation:
i like to read books, i like to bake, and i like to play my AG dolls
 
        
             
        
        
        
Mastication is the process by which food is crushed and ground by teeth. It increases the surface area of foods to allow a more efficient break down by enzymes.
 
        
             
        
        
        
Answer:
-There is a variation in traits.
-The environment cannot support unlimited populations of organisms.
there is heredity.
-The trait that allows the organism to have more offspring will become more common in the population of organisms.