It is B, and also for a moment I didn't understand that 4.69 x 10^22. I almost did this whole problem wrong.
the double helix is hydrogen bonded through the bases only so the bases are inside the helix only
as adenine combines with thymine and guanine with cytosine
phosphate are in the exterior of it
sugar groups constitute the double helix.
Answer:
A horrible, nasty smell.
Explanation:
A choking smell is a nasty, horrible smell. Hope this helps!
Answer:
i have taken environmental science so i can help