DNA probably. It might be one of the latter rungs too, thymine, and 2 others I forgot
.............Help on what?
I think its C.
I hope this helps and please do correct me if im wrong.
Protects the plant from losing water. The sharp needles of the tree mean that is has less surface area for the sun to make contact. They may also have differently shaped stomata, in order to prevent water loss
A compound that has Carbon and Hydrogen
