Which two types of cells are involved in fertilization?
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- Gametes are an organism's reproductive cells. The female gametes are called ova or egg cells, and the male gametes are called sperm. 
- During fertilisation, the gametes (an egg and sperm) fuse to form a zygote.

 
        
             
        
        
        
Answer:
can you explain the question 
 
        
             
        
        
        
Answer:
The definition of physical science is the sciences concerned with the study of inanimate natural objects, including physics, chemistry, astronomy, and related subjects.
Explanation:
 
        
                    
             
        
        
        
Of any substance? What about two powders such as 1/2 cup of white flour, then mixing 1/2 cup of salt together with the flour. This would then form a more coarse mixture being that the two particles differ in shape.
 
        
             
        
        
        
Answer:
The net ionic equation is 
C6H5COOH+ CN-= C6H5COO- + HCN
Explanation:
From the ionic equation
C6H5COOH + Na+ + CN- = C6H5COO- + Na+ + HCN
Only sodium is the spectator ion, so it cancels out, since C6H5COOH and HCN do not ionize completely they are left undissociated