There is no variety in asexual reproduction 
        
             
        
        
        
1983-1984 was when it was discovered
        
             
        
        
        
Answer:
Bacteria
Explanation:
All bacteria are microscopic (approx. 1 µm - 5 µms in size) and not visible with the n.aked eye. A microscope is needed to view them.
 
        
             
        
        
        
The purpose of a vortex instrument is to mix "small vials of liquids" in a laboratory. 
Explanation:
A vortex instrument or a mixer is an laboratory instrument which is used to mix liquids in small vials. 
The term vortex means swirling of a mass of air and this instrument also mixes liquid through swirling movement inside a tube. 
A vortex unit is run by an electric motor which moves a rubber cup attached to the drive shaft. 
The rubber cup swirls or oscillates in a circular motion and when a test tube with the liquid is pressed in the cup, the liquid contents get mixed through the transmission of the circular motion from the cup to the liquid. The speed of the rotation can be controlled.
 
        
             
        
        
        
Answer:
all 37 trillion cell in the body originates from a single fertilized egg called a zygote. The zygote divides repeatedly to produce an embryo. These embryonic cells continue to divide, differentiating into all the cell types present in the body of all humans (and other mammals), from a new-born baby to an elderly adult.