It is a completely true statement that the <span>created "kinds" like "species" is not easy to define. The correct option among the two options that are given in the question is the first option. I hope that this is the answer that you were looking for and the answer has actually come to your desired help.</span>
Nucleotides are a base pair and they fit together because their shape allows them to bond. The A-T pair frames two hydrogen bonds. G-C forms 3. As the strands bond they hold the Base Pairs of DNA together
Try to study more than text and don't let anyone get in your way to meet your goal
I believe the answer is Planet Nine.
Ecology
Ecology studies the life of living things and their environment.