The production of these crops is centered in the eastern third of the state but there are notable concentrations elsewhere, particularly in the river valleys of the Arkansas River (central Arkansas) and the Red River (southwest Arkansas).
 
        
             
        
        
        
B. is a protective structure made of cellulose fibrils
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Answer:
All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.
Explanation:
 
        
             
        
        
        
Doctors have not identified a specific cause or result but they think that there are risk factors like:
- advancing age 
- family history 
-umheathly life style choices
- taking certain medicine 
and just in case you did not know what osteoporosis is it is a common disease that weaken the bone and as they weaken you have a higher risk of unexpected fractures 
        
             
        
        
        
Answer - C. The time required for the Succession to Occur
Reasoning - Behind my answer is because the time the succession evolves and grows to build life and progress to improve and expand in each certain time period.