Some of the organisms have evolved in such a way that they remain inactive when the predator populations are active.
Adaptive theory of sleep suggests that the prey population prefer to sleep when (in this case, at night) the predators are most active. The prey population use this time in taking rest and restoring energy for other works. As the prey population is inactive and remained protected in safe places, they are less likely to be predated.
Hence, the correct answer is adaptive theory of sleeping.
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Explanation:

Whether an added sugar contains more or less fructose versus glucose has little impact on health. (An exception may be people with diabetes who need to control their blood glucose, in which case a higher-fructose, lower-glucose sugar may be preferable
The trees dont take in co2 cause there are none cutting off the oxygen cycle
Answer:
Sexual reproduction and asexual reproduction
Explanation:
this is because the jellyfish takes on two different body forms that is medusa and polyps. polyps produce asexually by budding while medusa pawn eggs and sperm to produce sexually