I only have one reason but hope it helps!
Because without those bases pairing there <span>would be no structure of a DNA.</span>
Hi There!
<span>Sentences with the word know
I think you're asking to write a sentences with the word know!
Example: I know you can do it Cutiepie
Example #2: Do you know who Ms.Cutiepie is?</span>
<span>A plant's plastids contain its chlorophyll, which enables it to photosynthesize. If it lost the plastids, it would not be able to photosynthesize, which is the only way it can get food, so it would die.</span>
Answer: The structure and curvature of the Earth results in beams of sunlight glancing off the equator and reaching other areas of the Earth. This means that the areas at the equator receive more energy as the sun's rays hit them directly. :)