Summary. Several things can cause nighttime depression, such as being unable to sleep due to insomnia. Depending on the cause, possible treatments could involve psychotherapy or antidepressant Earth revolves around an enormous source of energy: the Sun. It orbits the Sun every 365 and one-quarter days. It spins on an axis that is tilted 23 and a half degrees to the plane of its orbit. This axial tilt remains steady throughout the year. Depending on the time of year, some parts of the Earth are tilted more toward the direct rays of The correct answer is d. Earth's rotation on its axis.Day and night are caused by Earth's rotation on its axis. The Earth rotates on its axis, an imaginary line passing through the North Pole and the South Pole. Equinox. A solar equinox is a moment in time when the Sun crosses the Earth's equator, which is to say, appears directly above the equator, rather than north or south of the equator. On the day of the equinox, the Sun appears to rise "due east" and set "due west". This occurs twice each year, around 20 March and 23 September. canteronhorse. Day and night are caused by the rotation of the earth. When it is night time, the place where you are is facing away from the sun. When it is daytime you are facing towards the sun. I hope this helps! Infection. Syncope (fainting) Pain from injuries. Heart attack. Severe shortness of breath. Low blood glucose (sugar) Fear and anxiety. This article looks at 10 causes of cold sweats, how to treat them, and when they may be signs of an emergency. Verywell / Cindy Chung. fFvFd5.