Answer:
The human cell cycle has two main phases: the interphase and the M phase
Explanation:
Just like every cell, the human cell cycle has two main phases which are;
- The interphase
- The M phase
The interphase phase is further divided into 4 respective sub-phases namely;
 phase which is essentially a resting/quiescence phase. It  reserved for cells that have no need to divide unless they are called upon. phase which is essentially a resting/quiescence phase. It  reserved for cells that have no need to divide unless they are called upon.
 phase, a phase where cell growth and development takes place. phase, a phase where cell growth and development takes place.
- S phase, a phase where DNA is synthesized. 
 phase, a phase where protein is synthesized. phase, a phase where protein is synthesized.
The M phase is known as the active division phase. M can be mitosis or meiosis depending on the type of cells. Reproductive/sex cells will undergo meiosis while somatic/vegetative cells will undergo mitosis. 
Mitosis is further divided into prophase, metaphase, anaphase and telophase while meiosis is divided into prophase I, metaphase I, anaphase I, telophase I and prophase II, metaphase II, anaphase II, telophase II respectively.
 
        
             
        
        
        
Answer:
They can't because they are complete by themselves, i.e. independent of each other to survive, unlike higher animals and plants.
 
        
                    
             
        
        
        
The color produced by one milligram of platinum cobalt in one liter of dissolved water is fixed as one unit of color in platinum-cobalt scale.
 
        
                    
             
        
        
        
.................................   English please. ( :  ............................................
 
        
             
        
        
        
49 Kelvin = -224.15 Celsius
I believe this is the answer.