The purpose of the experiment is to test a hypothesis and draw a conclusion 
        
                    
             
        
        
        
Answer:
c. the formation of bone from within fibrous membranes
Explanation:
On the basis of formation ossification process is divided into two types: 
1) Endochondral ossification : The process by which bone is formed from haline cartilage.
2) Intramembranous ossification : The process by which bone is formed by replacing a fibrous membrane and not from cartilage. This type of ossification occurs as follows : 
- An ossification center appears in the fibrous connective tissue membrane.
- Bone matrix is secreted within fibrous membrane
- Woven bone and periosteum forms.
- Bone collar of compact bone forms and red marrow appears.
Hence option c. the formation of bone from within fibrous membranes is the right option
 
        
             
        
        
        
Answer:
Opportunistic.
Explanation:
Pathogen may be defined as the disease causing organism. The opportunistic pathogen causes disease mostly in the organism with weak immune system of the body.
The opportunistic pathogen can cause disease if the environmental condition is favorable for pathogen. These pathogens are not capable of inducing disease in the healthy individual.
Thus, the answer is opportunistic. 
 
        
             
        
        
        
Answer:
Function and structure are related, because of a certain structure a living thing make contain makes the object function the way it does. 
The relationship of a structure and function is the structuring levels from molecules to organism ensure successful functioning in all living organism and living system.