B. a film of food wrap wait, hold on, don't out that I'd it's an online thing, lemme check something, yeah forget about this answer, I'm not 100% sure
Answer:
Scientists can study tree rings in ice to learn more about past climates.
Explanation:
i think this is right one.
The answer would be 365 days
I’m not too sure about showing similar behaviour but as for containing the same DNA, you could probably extract the DNA and conduct DNA sequencing