Answer: I think it's A
Explanation: im not too sure about this one.
Answer:
The fall made animals and plants affected by disease. It was hard to get food,many things died and it also made some animals into carnivores.
Answer:
Explanation:
DNA Is a Structure That Encodes Biological Information.
hope it helps....
Answer:
hydrogen
Explanation:
Honestly, I don't know why DNA is held by hydrogen bonds, but I know that's the answer to your question.
Hope this helps :)