C) hope this helps may not be right :4
Skin is the Largest barrier agaisnt Pathogens which include Bacteria which cause infections.
Answer:


Explanation:
In RNA (ribonucleic acids), the nitrogen bases are:
- Adenine
- Guanine
- Cytosine
- <em>Uracil</em> (there is thymine in DNA, but not in RNA)
The bases pair like:
- Adenine (A) with Uracil (U)
- Cytosine (C) with Guanine (G)
So, the base pairs for RNA are <u>A with U </u>and <u>C with G</u>
"B. organisms that use the same resource" is destined to cause the most competition between those organisms, since resources are scarce and almost always limited.