Answer:
Thymine and uracil or adenine have two hydrogen bonds between them, whereas guanine and cytosine have three.
Answer:
a thing or event that evokes a specific functional reaction in an organ or tissue.
Explanation:
C. their DNA is very different
The answer to your rather difficult question is paper. only certain trees make gum rubber, only certain trees make syrup and none of them make turpentine( an extremely flammable substance. the only thing you can get from almost every tree is paper.
