Answer:
Fertilizing an egg 
Explanation:
it is a type of sexual reproduction
 
        
                    
             
        
        
        
Answer:
Endosteum plays an important role in bone repair, bone remodelling and appositional bone growth.
Explanation:
Endosteum consists of a soft and thin connective tissue that lines the cavity of femur and humerus. Some of the major functions of endosteum are as follows:
Bone remodelling: Endosteum can stimulate the bone resorption that leads to the formation of new bone from the outside.
Bone repair: Hematoma, at the time of bone injury causes the division of endosteal cells and helps in bone repair.
Appositional bone growth: Endosteum that line the osteoblast cell can secrete bone matrix and increases the bone diameter.
 
        
             
        
        
        
Energy loss is demonstrated more clearly on an energy pyramid than on a food web.
 
        
             
        
        
        
Yes because why a cell goes through mitosis the DNA is an exact replica, there forever having the same mutations
        
             
        
        
        
Explanation:
Amylase, lipase, pepsin, trypsin 
Help in digestion of food by catabolizing nutrients into monomeric units
Hemoglobin, albumin
Carry substances in the blood or lymph throughout the body
Actin, tubulin, keratin
Construct different structures, like the cytoskeleton
Insulin, thyroxine
Coordinate the activity of different body systems
Legume storage proteins, egg white (albumin) Provide nourishment in early development of the embryo and the seedling