IR is the prefix of irrelevant.
Answer: A nocturnal animal is an organism who is awake during the night and asleep during the day.
Explanation: Nocturnal animals often hunt, eat, or mate during the night, and rest during the day. Nocturnal animals' eyesight is adapted to see in the dark and their other senses are sharpened as well. However, nocturnal animals do not see color as a price for having night-vision.
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Some generally refers to a bigger amount that a little, but is not a lot, that is probably a confusing way to explain so i am sorry
The answer is B, hope it helps
