Normal sex cells will have 23 chromosomes
 
        
             
        
        
        
I think the answer is :extinct
        
             
        
        
        
<span>The sun's heat supplies and is used in many earth processes such as life and temperature, maintaining balance. 
1. Photosynthesis and sustain life
2. Climate and temperature
The one component in photosynthesis that can't be recycled but must be constantly available is </span>energy.
Light energy, mostly from sunlight,<span> is the main requirement for photosynthesis to occur. </span>
<span>Photosynthesis is a process wherein light energy is converted into chemical energy. </span>
<span>Chemical energy is generated to support the various activities of a plant or an organism.</span>
        
             
        
        
        
Because good researchers rely on first hand account or better said primary evidence. The reason why they rely on primary evidence is because it is usually the most reliable. Much more so than secondary or even tertiary evidence. This enables them to understand the history of a certain topic better.