There are three main types of mutation present for DNA. They are substitution, insertion and deletion. Substitution is the exchange of one base for another. Insertion happens where extra base pairs are inserted. Deletions are mutations where a section of DNA is lost. Therefore, the correct answer is substitution.
<span>True. You can relocate humans. While it may not be logical or simple, it is possible to move humans with changes in the external environment occurring following their displacement.</span>
<span>The Earth rotates once in about 24 hours with respect to the sun and once every 23 hours,
56 minutes and 4 seconds with respect to the stars. Earth's
rotation is slowing slightly with time; thus, a day was shorter in the
past.</span>
Explanation:
It happens when the moon is in the earth's shadow
And sun moon and earth is completely aligned
B!! i hope it works I got it right on edge