Answer:
a. By Calculating magnetic reversals.
Explanation:
They determine the age of the ocean floor by examining magnetic fields in the planet Earth.
 
        
                    
             
        
        
        
Answer: daddy chill and yes they are
Explanation:
 
        
             
        
        
        
Answer:
The answer is <u>Memory trace.</u>
Explanation:
- <u><em>a hypothetical permanent change in the nervous system brought about by memorizing something; an engram.</em></u>
 
        
             
        
        
        
The correct answer is option A, that is, FFA (Future Farmers Association).  
The FFA creates a positive distinction in the lives of students by creating their tendency in premier leadership, career success, and personal growth via agriculture education.  
It is the premier youth organization, which prepares members for careers and leadership in the business, science, and technology of agriculture. The population of the planet will be around 9.8 billion by 2050, thus, needing a 60 percent enhancement in the production of agriculture. Therefore, a rapidly developing talent, technical aptitude, and innovation are needed to meet this challenge.