Molecular clocks use rates of mutation to measure evolutionary time.Mutations add up at a fairly constant rate in the DNA of species that evolved from a common ancestor. The more mutations that happened in each lineage, the greater is the differences between these lineages.
        
             
        
        
        
The enamel. For example lemon juice can destroy your enamel it’s like another way that protects the teeth but you should also protect the enamel.
        
             
        
        
        
Explanation:
Phytoanticipins are defined as defense compounds which are constitutively present, i.e., regardless of the presence of pests or diseases.
 
        
             
        
        
        
The answer is aneuploidy. This is the result of a malfunction in the process of meiosis that
produces gametes, in the male.  The is caused by
a failure in non-disjunction hence an
extra Y chromosome occurs in one of the
formed gamete cells during anaphase II. 
 
        
             
        
        
        
Answer:
D. Water
Explanation:
the covalent bonds of water are stronger than the ionic bonds in the salt molecules so they dissolve.