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.
 
        
             
        
        
        
The main reason that most farmers use stem cuttings rather than just planting a seed is that a tree's genetic variation will occur. The seeds of many fruit trees tend to vary differently from the parent, because seeds themselves are produced by sexual reproduction (i.e they receive genes from a male and female to form). As they are a cross from two sets of genes, many fruit trees are not “true to seed”. Their seeds will produce a generally different variety of tree from the parent. When using stem cuttings, it's almost like a cloning process.
 
        
                    
             
        
        
        
Answer:
D. the dynamic regulation of an organism's internal environment to maintain conditions suitable for survival. 
Explanation:
 
        
             
        
        
        
1) Chloroplast 
 -converts solar energy into food for the plant. 
2) Cell Wall 
 -provides protection and structure.