It is false that deserts advance linearly, in easily mappable patterns.
Deserts don't really have a pattern when they are advancing - there are so many ways they can do this. 
        
                    
             
        
        
        
Answer:
20
Step-by-step explanation:
<u>20 points</u>      =       <u> 40</u>
50 points               100
 
        
             
        
        
        
Any two odd integers will always add up to an even number. Examples include 1+1=2, 15+19=34, etc. 
        
             
        
        
        
Answer:
A
Step-by-step explanation:
6 is a power. So both C and D are wrong because 6 is being treated as an ordinary integer.
So the answer must be either A or B.
B is not correct because to move an expression from the denominator to the numerator changes the sign in the base (which is m in this  question).
A is correct. the power is changed from 6 in the denominator to -6 in the numerator. m is shifted to the numerator as well.