Hello,
The answer is for sure <span>A. O horizon</span>.Positive.
Hope this helps
The answer is A.the site on an enzyme where the substrate binds
The structure of DNA is called a double helix because DNA is made up of two strands of nucleotides wound together in a spiral.
DNA has two strands that run opposite of each other and twist together much like a twisted ladder. Each backbone of the ladder is made up of alternating groups of sugar and phosphate groups.
Answer:
https://phys.org/news/2009-05-bird-songs-environment.html
Explanation:
