The answer is D the birds and the same bone structure but there beaks changed to eat different food so it can't be a or b and the song is just for mating and they are different species so the answer is D. (D)
The answer is D. Patterns of background radiation
Deoxyribose I think. Because DNA literally means Deoxyribonucleic acid. While RNA stands for ribonucleic acid, which means it contains ribose. hope this helps in the future.
Answer:
Pandas are classified as herbivores despite their taxonomic classification as a carnivore.