It helps to give solid evidence of natural selection. The idea is that there are a number of finches in the Galapagos Islands. These birds vary slightly in appearance, in the function of their beaks and in size. Two species can eventually alter themselves because of the environmental conditions they live in. Some traits will be passed on or developed in one group and not in the other or vica versa. These finches are remarkable in that it did not take long for the changes to take place. It is probably one of the strongest reasons for believing in natural selection, because only those birds who could adapt to change could easily pass on these advantages to their offspring. The relatively short period of time to enact these changes is what makes the this example  so attractive.
 
        
             
        
        
        
Answer:
Some practices from the recommended list of physical/cultural control that you could do year-round to help control pests are as follow:
1.	We can use those plant species that are more competitive. These plant species include release of chemical toxins that suppress other plants and insects.
2.	Use of large Hight quality seeds.
3.	By using narrow spacing in row and increasing seeding rate.
4.	By using shallow seeding technique which allow desired plant species to grow and develop faster above the surface of soil.
5.	By ensuring that our plant species is perfectly placed in that growing environment which is optimized with every specs.
6.	By rotating the crops
7.	By rotating plant species with different growing cycles and seasonal cycles.
8.	By rotating herbicides with alternative modes of action to delay the herbicide resistance development.
 
        
             
        
        
        
common descent means the evolutionary in biology and how they have something linked with their common ancestors.
 
        
                    
             
        
        
        
The National Institutes of Health found it effective in reducing pain and other symptoms, but it is not clear how it works.