The DNA double helix structure I guess.
Answer: A or C
B would not make sense, and no cell can mock a mitochondria
It would most likely be A
The blubber fat layer and white fur helps the polar bears to maintain internal homeostasis in cold weather.
I could barely see it but the first choice is correct
Answer:
Answer C
Explanation:
This is because if the offspring cant produce other children it isnt classified as a species because that is one of the criteria of a living being
