Maintenance of the circadian rhythm is important because it helps keep the body's functions running normally.
Alteration of the circadian rhythm to a significant degree may lead to mood disorders including mild depression and seasonal affective disorder.
Abrupt shifts in routine such as shift change or travel resulting in jet lag can alter the sleep cycle and also environmental factors such as decrease in number of daylight hours. This can negatively impact the secretion of melatonin which induces us to sleep which will lead to less sleep and thus irritability and mood swings.
Answer:
The universe would be contracting which would not fit the big bang theory.
Explanation:
The universe has been expanding since the big bang. If there is new evidence found that reverses the doppler effect and that the objects in space are actually going in the opposite direction, that means that the universe is actually not expanding but contracting instead.
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Natural selection would probably favor different varieties in the different islands. In other words, beaks changed as the birds developed different tastes for fruits, seeds, or insects picked from the ground or cacti (due to lack of food resources). Long, pointed beaks made some of them more fit for picking seeds out of cactus fruits.
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