Explanation:
Silent mutations occur when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene's protein.
The change in color of the foliage can lead to a decrease in numbers of the green beetles. With the color of the leaves changed the beetles are unable to blend in and hide from the blackbird, making them vulnerable to their attacks.
i guess it is m1v1=m2v2 since m2 is 1.5 v2 is 250*10^-3 l and m1 is 10 then you will need 37.5 ml of the stock your answer is 37.5 milli liter i guess