The organelle that temporarily breaks apart so that the DNA can divide up is the nucleus. Nucleus store most of the cell's DNA it is responsible for carrying genetic information. It is also responsible for generating genetic expression to ensure the proper activities of the entire cells. 
        
             
        
        
        
MRNA has a complex secondary structure; 3D. While tRNA is more like an X figure.
        
             
        
        
        
Answer:
Gastrulation takes place after cleavage and the formation of the blastula and the primitive streak. It is followed by organogenesis, when individual organs develop within the newly-formed germ layers. Each layer gives rise to specific tissues and organs in the developing embryo.Cells in each germ layer differentiate into tissues and embryonic organs. The ectoderm gives rise to the nervous system and the epidermis, among other tissues. The mesoderm gives rise to the muscle cells and connective tissue in the body. The endoderm gives rise to the gut and many internal organs.
 
        
             
        
        
        
Your answer is leukocytes.
        
             
        
        
        
Answer:
shivering 
Explanation:
the movement of your muscles creates friction between them, which produces heat, thus warming our bodies up.