We should save the document regularly when working on the document. If the app breaks down, you'll still have the file with your progress. To be extra safe, save the document in multiple places including the computer itself, also your USB drive. just so in case if the computer breaks down, you still have your USB drive. 
        
             
        
        
        
Answer:
Corrigiendo el error de Schwann y preparando el principio de Virchow, señaló que las células se multiplican por escisión de su núcleo, no por generatio aequivoca a partir del protoplasma originario. ... Según los historiadores Pagel (1945) y Ackerknecht (1957), parece que Remak precedió a Virchow en sus descubrimientos.
Explanation:
¡espero que esto ayude!
 
        
             
        
        
        
Answer:
crossing over
Explanation:
Crossing over is where homologs can exchange DNA which leads to genetic variation
 
        
             
        
        
        
The second one is strike slip fault.
the third one is normal fault.
the first one is reverse fault.