Simulations generally involve a simple design. In contrast, the world is a very complex system. Many events, such as how we farm, can disrupt the world's delicate balance. Simulations do not take into account the varied interactions that affect events in the real world. 
        
             
        
        
        
Pressure decreases with increasing altitude. 
        
             
        
        
        
Answer:
1. transcription of Tau DNA in different directions.
4. different chemical modifications of Tau protein.
Explanation:
Tau gene transcribe in different direction which depends upon the animal age. This happens because at different age and developmental stage, animal produce different RNA binding proteins which leads to formation of alternative splice forms. This reaction is strengthen by the addition of phosphate and sugar molecules which again depending on developmental stage and time.
 
        
             
        
        
        
Answer:
do you have the rest of the answers? i really need them. 
Explanation:
 
        
             
        
        
        
Hello. Sure why not. :)))))