Definitions. The terms Unaccompanied minors, unaccompanied alien children, child migrants, child immigrants, unaccompanied migrant children, and juvenile immigrants are often used interchangeably and generally refer to immigrants who are under the age of 18 and are not under the care of a parent or legal guardian.
Regulus is 0.46 degree from the ecliptic, the closest of the bright stars, and is regularly occulted by the Moon. Occultations by the planets Mercury and Venus are possible but rare, as are occultations by asteroids. The last occultation of Regulus by a planet was on July 7, 1959, by Venus.
Growing degree-day. Growing degree days (GDD), also called growing degree units (GDUs), are a heuristic tool in phenology. GDD are a measure of heat accumulation used by horticulturists, gardeners, and farmers to predict plant and animal development rates such as the date that a flower will bloom, an insect will emerge from dormancy, or a crop will reach maturity.