Start with 1.8, then add 1.05 repeatedly
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
The distributive law states that 

The expression 3+21a+15b consists of three terms:
- 3=3·1;
- 21a=3·7a;
- 15b=3·5b.
You can see that 3 is the common factor of these three terms, thus

 
        
             
        
        
        
Answer:
A natural disaster that affects a small number of organisms.
Step-by-step explanation:
A natural disaster that affects a small number of organisms since a natural disaster is a sudden and unpredictable for the most part. Due to this, animals don't have time to adapt and this will not affect the evolution process of those species since they are likely to die within a short period of time after the calamity occurs. They will not have enough time to save their own lives so can you expect them to evolve and grow wings to fly away?
 
        
             
        
        
        
Answer:
no entiendo :C
Step-by-step explanation: